Based on the theory of crystallization,a solvent-free solid-liquid phase crystallization method called solid-melt crystallization was designed to prepare energetic coordination polymers.Two target compounds[Cu(NPyz)_(...Based on the theory of crystallization,a solvent-free solid-liquid phase crystallization method called solid-melt crystallization was designed to prepare energetic coordination polymers.Two target compounds[Cu(NPyz)_(4)NO_(3)]·NO_(3)(ECPs-1)and Cu(NPyz)_(4)(ClO_(4))_(2)(ECCs-2)were prepared through programmed heating and cooling by using 4-nitropyrazole(NPyz),(Cu(NO_(3))_(2)·5H_(2)O and Cu(ClO_(4))_(2)·5H_(2)O) as raw materials.In addition,crystallization pre-experiments and annealing experiments also verified the feasibility of the method.Their structures were confirmed by IR,elemental analysis,single-crystal X-ray diffraction and powder X-ray diffraction.The physicochemical properties and sensitivity test results showed that ECCs-2 has better thermal stability(T_(d)=221℃),while ECPs-1 is less sensitive to mechanical stimuli(IS=12 J,FS=240 N).Calculations based on EXPLO5 and the Kamlet-Jacobs equation showed that ECCs-2 has more considerable detonation performance(P=25.2 GPa,D=7.5 km/s).In comparison,the more intuitive results from the HN test,flame test,thermal resistance test and lead plate explosion test revealed that ECCs-2 has an“acceptable”detonation performance.The laser detonation test also showed that ECCs-2 is a promising excellent laser detonation material(E=408 mJ,P=24 W,τ=17 ms).展开更多
In this study,lipases of CALB(Candida antarctica lipase B),TLL(Thermomyces lanuginosa lipase),RML(Rhizomucor miehei lipase),CALA(Candida antarctica lipase A)and LU(Lecitase?Ultra)were encapsulated into the nucleotideh...In this study,lipases of CALB(Candida antarctica lipase B),TLL(Thermomyces lanuginosa lipase),RML(Rhizomucor miehei lipase),CALA(Candida antarctica lipase A)and LU(Lecitase?Ultra)were encapsulated into the nucleotidehybrid metal coordination polymers(CPs)for diacylglyerols(DAG)preparation.Guanosine 5'-monophosphate(GMP)and adenosine 5'-monophosphate(AMP)were used as coordinating molecules,and metal ions of Fe^(3+),Ba^(2+),Mn^(2+),Ni^(2+)and Cr^(3+)were applied to prepare matrix.Results indicated that,besides Ba^(2+)with AMP,all other metal ions can coordinate with AMP and GMP to generate CPs.In addition,the AMP/Ni was amorphous when standing temperature was 4℃,while it was crystalline when standing temperature was from 30 to 180℃.DAG content from 47.55%to 64.99%was obtained from glycerolysis by CALB@GMP/Ba,RML@GMP/Ba,TLL@GMP/Ba,RML@GMP/Mn and TLL@GMP/Mn.Additionally,CALB@GMP/Fe showed selectivity towards DAG formation in the esterification and DAG content up to 61.88%was obtained.展开更多
The high energy coordination compounds Cu(TZCA)_(2)(ClO_(4))_(2)(ECCs-1) was prepared by 1H-tetrazole-5-carbohydrazide(TZCA) with a high energy skeleton and a strong coordination ability group.At the same time,the rea...The high energy coordination compounds Cu(TZCA)_(2)(ClO_(4))_(2)(ECCs-1) was prepared by 1H-tetrazole-5-carbohydrazide(TZCA) with a high energy skeleton and a strong coordination ability group.At the same time,the reaction activity of the ligand was explored,and the single crystal structure of it and intermediate were obtained.The structures of all substances were characterized by IR and EA.And the structure and composition of ECCs-1 are confirmed by ESP,AC,SEM and ICP-OES.Physical and chemical properties tests show that ECCs-1 has an acceptable thermal stability(T_(d)=177℃) and extremely sensitive mechanical stimulation(IS=1 J,FS=5 N).The comprehensive performance test results show that ECCs-1 has excellent initiation ability.In addition,the decomposition mechanism of ECCs-1 is explored from two aspects of experiment and theoretical calculation.展开更多
With the improvement of high-tech and emergence of crossing and new fields, lanthanide-transition (Ln-M) heterometallic coordination polymers have attracted much attention of many researchers, which exhibit novel st...With the improvement of high-tech and emergence of crossing and new fields, lanthanide-transition (Ln-M) heterometallic coordination polymers have attracted much attention of many researchers, which exhibit novel structures and unique properties with potential applications in the nonlinear optical materials, fluorescent materials, superconducting materials, magnetic materials, catalysis, bio-simulation, adsorption and separation, and so on. It is thus necessary to summarize Ln-M heterometallic coordination polymers. According to the transition metal ions, those coordination polymers are divided into six parts to explore the current applications and future developments.展开更多
In this work, a series of MIL-101-SO3H(x) polymeric materials were prepared and further used for the first time as efficient heterogeneous catalysts for the conversion of fructose-based carbohydrates into 5-ethoxyme...In this work, a series of MIL-101-SO3H(x) polymeric materials were prepared and further used for the first time as efficient heterogeneous catalysts for the conversion of fructose-based carbohydrates into 5-ethoxymethylfurfural(EMF) in a renewable mixed solvent system consisting of ethanol and tetrahydrofuran(THF). The influence of –SO3H content on the acidity as well as on the catalytic activity of the porous coordination polymers in EMF production was also studied. High EMF yields of 67.7% and 54.2% could be successively obtained from fructose and inulin in the presence of MIL-101-SO;H(100) at 130 °C for 15 h.The catalyst could be reused for five times without significant loss of its activity and the recovery process was facile and simple. This work provides a new platform by application of porous coordination polymers(PCPs) for the production of the potential liquid fuel molecule EMF from biomass in a sustainable solvent system.展开更多
Two coordination polymers, namely {[Ni(cpna)(H2biim)(H2O)]·H2O}n (1) and {[Mn(cpna)(H2biim)]·H2O}n (2) (H2cpna = 5-(2'-carboxylphenyl) nicotic acid, H2biim = 2,2'- biimidazole),have been ...Two coordination polymers, namely {[Ni(cpna)(H2biim)(H2O)]·H2O}n (1) and {[Mn(cpna)(H2biim)]·H2O}n (2) (H2cpna = 5-(2'-carboxylphenyl) nicotic acid, H2biim = 2,2'- biimidazole),have been hydrothermally synthesized and characterized by elemental analysis, IR, TG, magnetic properties, and single-crystal X-ray diffraction. Compound 1 exhibits a one- dimensional (1D) step-like chain structure, which further builds a three-dimensional (3D) supramolecular architecture via O–HAAAO and N–HAAAO hydrogen-bonding and π-π stacking interactions. Compound 2 possesses a one-dimensional (1D) double chain structure, which is further assembled into a 3D supramolecular framework by N–HAAAO hydrogen bonding and π-π stacking interactions. Magnetic susceptibility measurement indicates that compound 1 shows a weak antiferromagnetic coupling between the nearest Ni(II) centers, with g = 2.11 and J = –1.87 cm^-1.展开更多
Two new CdⅡ-based coordination polymers(CPs) with mixed adenine(Hade) nucleobase and 5-nitroisophathalate(nip) ligands, {[Cd(Hade)_(0.5)(H_2O)_2(nip)]·H_2O}n 1 and {[Cd(Hade)(H_2O)_(1.25)(CH_3OH)0.75(nip)]·...Two new CdⅡ-based coordination polymers(CPs) with mixed adenine(Hade) nucleobase and 5-nitroisophathalate(nip) ligands, {[Cd(Hade)_(0.5)(H_2O)_2(nip)]·H_2O}n 1 and {[Cd(Hade)(H_2O)_(1.25)(CH_3OH)0.75(nip)]·0.75 CH_3OH·0.5H_2 O}_n 2, were successfully obtained by varying the preparation methods and structurally characterized. Crystal data for 1: monoclinic, C2/c space group with a = 10.5546(6), b = 17.3496(6), c = 16.1198(9) ?, β = 104.2800(10)o, V = 2860.6(2) ?3, Dc = 2.058 g/cm^3, Mr = 443.13, Z = 8, F(000) = 1752, μ = 1.585 mm^(–1), the final R = 0.0394 and wR = 0.1109 for 2285 observed reflections with I > 2σ(I). For 2: triclinic, P1 space group with a = 10.2032(7), b = 10.5098(8), c = 11.0223(8) ?, a = 65.7050(10)o, β = 74.5750(10)o, g = 61.5280(10)o, V = 943.38(12) ?~3, Dc = 1.888 g/cm3, Mr = 536.24, Z = 2, F(000) = 537, μ = 1.225 mm^(–1), the final R = 0.0225 and wR = 0.0702 for 3143 observed reflections with I > 2σ(I). 1 presents a crisscrossed layer with mutually orthogonal {Cd(nip)} chains aggregated by neutral m-N(7),N(9)-Hade connector. By contrast, 2 displays a linear chain with CdⅡ ions extended by bis-bidentate chelating-nip2–connectors, which are further assembled into a broad ribbon by N-H···N hydrogen-bonding interactions. Additionally, the two solid-state samples with comparable thermal stability exhibit favorable luminescent emissions at room temperature, suggesting their potential applications as fluorescence materials.展开更多
Two 1D coordination polymers Cu2I(C6N3H4)2(1) and CuⅡ(C6N3H4)2·H2O(2) based on benzotriazole(Bta) were hydrothermally synthesized by controlling the crystallization temperature.Single-crystal X-ray dif...Two 1D coordination polymers Cu2I(C6N3H4)2(1) and CuⅡ(C6N3H4)2·H2O(2) based on benzotriazole(Bta) were hydrothermally synthesized by controlling the crystallization temperature.Single-crystal X-ray diffraction(XRD) analyses reveal that compound 1 is a 1D tubular structure constructed from two types of 1D chains {―Cu―N=N―N―} n,where the Cu(I) ions adopt linear,triangular,and tetrahedral coordination modes to connect two types of Bta ligands via π-π interaction inside the tubular-like chain.For compound 2,the Cu(Ⅱ) ions assume a quadrilateral coordination mode linking to the Bta ligands to give 1D straight chains,which stacks through π-π interactions to construct a 2D layer structure.Further characterizations including elemental analyses,infrared IR spectra,thermogravimetric(TG) analyses and luminescence properties have been done.展开更多
By using solvothermal method, two new metal coordination polymers based on 2,5-furandicarboxylic acid(H2FDA) ligand and 4,4'-bipyridine(bipy), [Cu(FDA)(4,4'-bipy)(DMF)]n·solvent(1) and {[Zn(4,4'-b...By using solvothermal method, two new metal coordination polymers based on 2,5-furandicarboxylic acid(H2FDA) ligand and 4,4'-bipyridine(bipy), [Cu(FDA)(4,4'-bipy)(DMF)]n·solvent(1) and {[Zn(4,4'-bipy)(FDA)(DMF)]·DMF}n(2), were produced and characterized by single-crystal X-ray diffraction analyses, elemental analyses, IR and powder X-ray diffraction. Compound 1 crystallizes in monoclinic space group P21/c with a = 11.104(2), b = 10.396(2), c = 18.772(4) , β = 96.20(3)o, V = 2154.2(7) 3, Dc = 1.378 g/cm^3, C19H17 Cu N3O6, Mr = 446.90, F(000) = 916, μ(Mo Kα) = 1.05 mm^-1, Z = 4, R = 0.0691 and wR = 0.1341 for 3537 observed reflections(I 2σ(I)), and R = 0.1062 and w R = 0.1482 for all data. Compound 2 crystallizes in monoclinic space group C2/c with a = 29.779(6), b = 9.6417(19), c = 17.292(3), β = 105.69(3)°, V = 4779.9(16) 3, Dc = 1.445 g/cm^3, C22H22N4O7 Zn, Mr = 519.81, F(000) = 2144, μ(Mo Kα)= 1.08 mm^-1, Z = 8, R = 0.0641 and w R = 0.1007 for 2985 observed reflections(I 2σ(I)), and R = 0.1028 and w R = 0.1112 for all data. Different coordination geometry of metal ions, square pyramid of Cu2+ and trigonal bipyramid of Zn2+, bring about different orientations of FDA2- ligands as well as 4,4'-bipyridine ligands, and furthermore distinct assembly structures for 1 and 2. The thermal stabilities of 1 and 2 are also investigated.展开更多
Two new europium (Ⅲ) coordination polymers formulated as Eu2(H20)a(ox)4]· (CsH6N)2-2H20 (1) and Eu2(ad)3(H20)4]'0.25H20 (2) (H20x = oxalic acid, H2ad = adipic acid) have been synthesized from ...Two new europium (Ⅲ) coordination polymers formulated as Eu2(H20)a(ox)4]· (CsH6N)2-2H20 (1) and Eu2(ad)3(H20)4]'0.25H20 (2) (H20x = oxalic acid, H2ad = adipic acid) have been synthesized from the self-assembly of lanthanide ions Eu^3+ with flexible oxalic and adipic acid ligands, respectively. Structural analyses revealed that complex 1 exhibits three-dimensional metalorganic frameworks, and 2 has intricate two-dimensional interpenetrated metal-organic networks. In addition, the photoluminescent properties of complexes 1 and 2 were discussed in detail, which shows strong red emission, corresponding to ^5Do →^7F? transition of Eu^3+ ions.展开更多
ABSTRACT Four novel 1D lanthanide coordination polymers with formula [Ln(3,4-pybz)3(HzO)2. H2O]n (Ln = 1 Sm; 2 Eu; 3 Tb; 4 Dy, 3,4-Hpybz = 3-(pyridin-4-yl)benzoic acid) have been synthesized by hydrothermal re...ABSTRACT Four novel 1D lanthanide coordination polymers with formula [Ln(3,4-pybz)3(HzO)2. H2O]n (Ln = 1 Sm; 2 Eu; 3 Tb; 4 Dy, 3,4-Hpybz = 3-(pyridin-4-yl)benzoic acid) have been synthesized by hydrothermal reactions of lanthanide oxide and 3-(pyridine-4-yl) benzoic acid. Single-crystal X-ray diffraction shows that the four compounds are isostructural. They all crystallize in a monoelinic system, space group P1^-. They have a doubly carboxylate-bridged infinite-chain structure with alternating Ln-(carboxylate)2-Ln linkages and one chelating carboxylate group on each metal center. The Ln ion also combines to two water molecules to form an eight-coordinate square antiprismatic geometry. The pyridine nitrogen atoms of the ligand do not coordinate to the metal centers but direct the formation of a 3D network through hydrogen bonding with coordinated water molecules. The photoluminescent properties of 2 and 3 have been also studied.展开更多
A new Cd(II) coordination polymer, [Cd05(nba)(bib)0.5]2n (1, Hnba = 4-nitrobenzoicacid, bib = 1,4-bis(imidazol-l-yl)-butane), was synthesized at room temperature condition andcharacterized by IR spectra, ele...A new Cd(II) coordination polymer, [Cd05(nba)(bib)0.5]2n (1, Hnba = 4-nitrobenzoicacid, bib = 1,4-bis(imidazol-l-yl)-butane), was synthesized at room temperature condition andcharacterized by IR spectra, elemental analyses, single-crystal and powder X-ray diffractions.Complex 1 belongs to the monoclinic system, C2/c space group, with a = 26.0600(14), b = 6.7889(4),c = 16.5825(9)A, β= 118.8120(10)°, V= 2570.6(2) A3, Z= 4. It shows one-dimensional chains andis further linked by π-π stacking interactions to yield a three-dimensional supramolecular structure.Thermal stability and luminescence of 1 were investigated.展开更多
The creation of a porous magnet is a long-sought academic goal since magnetism and porosity are hostile to one another. While long-range magnetic ordering needs spin carriers of short separation through short bridges,...The creation of a porous magnet is a long-sought academic goal since magnetism and porosity are hostile to one another. While long-range magnetic ordering needs spin carriers of short separation through short bridges, porosity relies on the use of extended connecting ligands. Here, we will give a survey of the cluster-based magnetic porous coordination polymers, i.e., 0-D MPCPs, according to their functional subunits: (1) nanoporous spin crossover materials with single metal nodes; (2) metal-radical approach with rigid organic radical ligands and single metal nodes; (C) PCPs with rigid organic ligands and metal oligomer nodes; (D) PCPs with metal complex linkers and polymetal cluster nodes; (E) PCPs with organo-polymetal cluster linkers and single metal nodes. The assembly from clusters can provide a reasonable route to resolve the hostility between magnetism and porosity. This assembly’s merits are obvious: the pore benefits from the big cluster according to "Scale Chemistry", and the functional framework inherits interesting physical properties from the clusters with a large ground spin S.展开更多
Two new coordination polymers,named {[Co3(pfca)6(phen)2]·2H2O}n(1) and[Cu(pfca)2(4,4'-bpy)(H2O)]n(2)(Hpfca = 4-fluorocinnamic acid and 4,4-bpy = 4,4-bipyridine),were hydrothermally synthesized an...Two new coordination polymers,named {[Co3(pfca)6(phen)2]·2H2O}n(1) and[Cu(pfca)2(4,4'-bpy)(H2O)]n(2)(Hpfca = 4-fluorocinnamic acid and 4,4-bpy = 4,4-bipyridine),were hydrothermally synthesized and characterized by elemental analysis,IR spectroscopy,thermogravimetric analysis(TGA),and single-crystal X-ray diffraction.Complex 1 crystallizes in the triclinic crystal system,space group P1 with a = 10.939(3),b = 12.430(4),c = 13.815(4) A,α=78.436(3),β= 70.261(3),γ= 80.268(3)°,V= 1721.8(9) A^3,Dc = 1.508 g/cm^3,Mr= 1564.06,Z = 1,F(000) = 799,μ= 0.802 mm^(-1),the final R = 0.0432 and wR = 0.1015 for 13250 observed reflections with I 2σ(I).Complex 2 is of monoclinic system,space group P2/lc with a =15.4985(14),b = 15.8424(14),c = 10.9528(10) A,β= 107.1600(10)°,V= 2569.6(4) A^3,Dc = 1.468g/cm^3,Mr = 568.02,Z = 4,F(000) = 1164,μ= 0.906 mm^(-1),the final R = 0.0371 and wR = 0.0842 for 18183 observed reflections with I〉 2σ(I).Complex 1 features linear Co(Ⅱ)-trinuclear units,which are assembled into a final 3D supramolecular structure through π…π stacking interactions and F-H weak interactions.Complex 2 consists of 1D polymeric Cu(Ⅱ)-chains that are further cohered together by extensive H-bonds.展开更多
(E)-2,6-Dimethyl-4-styrylpyridine-3,5-dicarboxylic acid (H2mspda) is firstly employed in coordination chemistry.Two isostructural two-dimensional (2-D) 4-connected metal-organic coordination polymers with a gene...(E)-2,6-Dimethyl-4-styrylpyridine-3,5-dicarboxylic acid (H2mspda) is firstly employed in coordination chemistry.Two isostructural two-dimensional (2-D) 4-connected metal-organic coordination polymers with a general formula of {M2[(mspda)2(bpy)(H2O)2]}n (M=Zn(1) and Co(2)) are assembled from H2mspda,4,4'-bipyridyl (bpy),zinc and cobalt ions under hydrothermal conditions,and characterized by single-crystal X-ray diffraction analyses.Complex 1 crystallizes in monoclinic,space group P21/n with a=14.551(4),b=10.941(3),c=14.945(4),β=98.817(4)o,V=2351.3(1)3,Dc=1.511 g/cm3,μ(MoKα)=1.090 mm-1,F(000)=1104,Z=4,the final R=0.0335 and wR=0.0485 for 3296 observed reflections (I 〉 2σ(I)).In compound 1,mspda2-spacers are only arrayed in a head-to-tail fashion which corresponds to a 2-D coordination polymer.Solid-state H2mspda and complex 1 have expected photoluminescence (λem=475~496 nm) at room temperature.展开更多
Three lanthanide coordination polymers [Ln(bcpb)0.5(NO3)(DEF)2] (Ln = Y (1), Tb (2), Eu (3), H4bcpb = 2,5-bis(2,4-dicarboxyphenyl) pyridine and DEF = N,N-diethylformamide)) have been solvothermally sy...Three lanthanide coordination polymers [Ln(bcpb)0.5(NO3)(DEF)2] (Ln = Y (1), Tb (2), Eu (3), H4bcpb = 2,5-bis(2,4-dicarboxyphenyl) pyridine and DEF = N,N-diethylformamide)) have been solvothermally synthesized under hydrothermal conditions with a novel Hnbcpb ligand and trivalent lanthanide nitrates. Single-crystal X-ray diffraction analysis reveals that compounds 1-3 are isostructural and crystallize in the monoclinic system, space group P21/n. Crystal data for 1: C20H26N409Y, Mr = 555.36, a = 13.022(9), b = 17.778(12), c = 10.861(8) A, β= 100.208(3)°, V = 2475(3) A3, Z = 4; Crystal data for 2: C20H26N4OgTb, Mr = 625.37, a = 13.0476(4), b = 17.8037(7), c = 10.9398(3) A, β = 100.008(4)°, V = 2496.4(12) A3, Z = 4; Crystal data for 3: C20H26N409Eu, Mr = 618.41, a = 13.055(4), b = 17.833(5), c = 10.893(3)A, β = 100.133(4)°, V= 2496.4(12) A3, Z = 4. The compounds were characterized by thermogravimetric analysis (TGA), IR spectroscopy, and X-ray single-crystal diffraction. Compounds 1-3 all feature 2D networks with -ABAB- fashions. The luminescent properties of compounds 1-3 and free H4bcpb ligand were investigated at room temperature. The results show that the H4bcpb ligand can efficiently transfer energy to the Tb(III) ions, while the energy is not fully transferred from the H4bcpb ligand to the Eu(III) ions.展开更多
The assembly reactions of o- (or m-, or p-) tetrafluorobenzenedicarboxylic acid (denoted as o-H2L, m-H2L and p-HzL, respectively), benzonitrile and Ag+ ion led to three compounds: [Ag2(PhCN)2(o-HL)2]n (1),...The assembly reactions of o- (or m-, or p-) tetrafluorobenzenedicarboxylic acid (denoted as o-H2L, m-H2L and p-HzL, respectively), benzonitrile and Ag+ ion led to three compounds: [Ag2(PhCN)2(o-HL)2]n (1), [Ag2(PhCN)2(m-HL)2]n (2) and [Ag2(PhCN)2(p-L)], (3). 1 and 2 feature a 1D coordination chain, while 3 bears a 2D net structure. A variety of weak interactions are observed in the compounds. Strong nwrinteractions connect the 1D chains into a 3D supramolecular network in 1. Hydrogen bonds connect the chains into layers in 2. Three types of interesting π-π interactions also assemble the 2D layers into a 3D overall structure in 3.展开更多
Two new cadmium(II) and zinc(II) coordination polymers, {[Cd(btre)0.5- (mip)(H2O)2]·H2O}n (1) and [Zn(btre)(mip)]n (2), were synthesized at room temperature condition and characterized by IR spe...Two new cadmium(II) and zinc(II) coordination polymers, {[Cd(btre)0.5- (mip)(H2O)2]·H2O}n (1) and [Zn(btre)(mip)]n (2), were synthesized at room temperature condition and characterized by IR spectra, elemental analyses, single-crystal and powder X-ray diffractions (btre = 1,2-bis(1,2,4-triazol-4-yl)ethane, H2mip = 5-methyl-1,3-benzenedicarboxylic acid). Complex 1 belongs to the triclinic system, P space group, with a = 8.9830(6), b = 10.0579(6), c = 10.2479(9) , α = 98.837(6), β = 115.975(8), γ = 106.370(6)°, V = 756.30(11) 3 and Z = 2; complex 2 crystallizes in monoclinic, space group P21/c, with a = 7.0332(3), b = 14.9947(7), c = 15.9689(7) ?, β = 97.1170(10)°, V = 1671.12(13) ?3 and Z = 4. Compounds 1 and 2 based on the same N/O-donor ligands show different structures. The one-dimensional chains of 1 are further linked by hydrogen bonding and π-π interactions to yield a three-dimensional supramolecular structure. The two-dimensional (6,3) networks of 2 are further extended into a 3D framework via π-π interactions. Thermal stabilities and luminescence of 1 and 2 were investigated.展开更多
Two new coordination polymers,[Co(BIPA)(bpp)](1) and [Zn(BIPA)(bpp)(H2O)](2)(H2BIPA = 5-bromoisophthalic acid,bpp = 1,3-di(4-pyridyl)propane) have been synthesized via hydrothermal reactions.The two ...Two new coordination polymers,[Co(BIPA)(bpp)](1) and [Zn(BIPA)(bpp)(H2O)](2)(H2BIPA = 5-bromoisophthalic acid,bpp = 1,3-di(4-pyridyl)propane) have been synthesized via hydrothermal reactions.The two compounds were characterized by elemental analysis,IR spectra,TG analysis and single-crystal X-ray determination.Compound 1 crystallizes in triclinic,space group P1 with a = 9.0316(13),b = 10.1179(14),c = 11.8884(17) ,α = 68.022(2),β = 84.749(2),γ = 77.791(2)°,V = 984.5(2) 3,Z = 2,C21H17BrN2O4Co,Mr = 500.21,Dc = 1.687 g.cm-3,μ = 2.932 mm-1,S = 0.981,F(000) = 502,R = 0.0440 and wR = 0.1357 for 3773 observed reflections with I 2σ(I).Compound 2 crystallizes in the monoclinic system,space group P21/c with a = 7.8466(10),b = 27.483(4),c = 9.6583(13) ,β = 96.663(3)°,V = 2068.8(5) 3,Z = 4,C21H19BrN2O5Zn,Mr = 524.66,Dc = 1.685 g.cm-3,μ = 3.155 mm-1,S = 0.969,F(000) = 1056,R = 0.0441 and wR = 0.0517 for 4058 observed reflections with I 2σ(I).The two compounds are constructed from the BIPA2-and bpp ligands but they exhibit different kinds of one-dimensional chain structures.In 1,the chains are composed of the Co(Ⅱ) ions and BIPA2-ligands,and the chains are further extended into a 2D framework structure by π...π interactions of the benzene rings from the BIPA2-ligands between the adjacent chains.In 2,the chains are made up of Zn(Ⅱ) ions and BIPA2-ligands through another fashion,and the chains are further linked via hydrogen bonding interactions to yield a two-dimensional supramolecular layer structure.Furthermore,the bpp ligand features two kinds of different coordination modes in the two compounds.展开更多
Two coordination polymers, namely [Pb(Hbtc)(phen)]n(1) and {[Cd3(btc)2(H2O)4]·2H2O}n(2, H3btc = biphenyl-2,5,3'-tricarboxylic acid, phen = 1,10-phenanthroline), were assembled. Single-crystal X-ray d...Two coordination polymers, namely [Pb(Hbtc)(phen)]n(1) and {[Cd3(btc)2(H2O)4]·2H2O}n(2, H3btc = biphenyl-2,5,3'-tricarboxylic acid, phen = 1,10-phenanthroline), were assembled. Single-crystal X-ray diffraction studies show that compound 1 possesses a zigzag chain 1D coordination network, which is further extended into a 3D supramolecular architecture via O–H···O hydrogen bonds and π-π packing interactions. Compound 2 features a 3D open framework based on a tricadmium(II) subunit, generating a trinodal 4,4,6-connected net with the 4,4,6T24 topology defined by the point symbol of(44·62)3(46·69)2. Thermal stability and luminescent properties of both compounds were studied and discussed.展开更多
基金the projects of National Natural Science Foundation of China(Grant Nos.22175025 and 21905023)for their generous financial support.
文摘Based on the theory of crystallization,a solvent-free solid-liquid phase crystallization method called solid-melt crystallization was designed to prepare energetic coordination polymers.Two target compounds[Cu(NPyz)_(4)NO_(3)]·NO_(3)(ECPs-1)and Cu(NPyz)_(4)(ClO_(4))_(2)(ECCs-2)were prepared through programmed heating and cooling by using 4-nitropyrazole(NPyz),(Cu(NO_(3))_(2)·5H_(2)O and Cu(ClO_(4))_(2)·5H_(2)O) as raw materials.In addition,crystallization pre-experiments and annealing experiments also verified the feasibility of the method.Their structures were confirmed by IR,elemental analysis,single-crystal X-ray diffraction and powder X-ray diffraction.The physicochemical properties and sensitivity test results showed that ECCs-2 has better thermal stability(T_(d)=221℃),while ECPs-1 is less sensitive to mechanical stimuli(IS=12 J,FS=240 N).Calculations based on EXPLO5 and the Kamlet-Jacobs equation showed that ECCs-2 has more considerable detonation performance(P=25.2 GPa,D=7.5 km/s).In comparison,the more intuitive results from the HN test,flame test,thermal resistance test and lead plate explosion test revealed that ECCs-2 has an“acceptable”detonation performance.The laser detonation test also showed that ECCs-2 is a promising excellent laser detonation material(E=408 mJ,P=24 W,τ=17 ms).
基金the National Natural Science Foundation of China(31772000)。
文摘In this study,lipases of CALB(Candida antarctica lipase B),TLL(Thermomyces lanuginosa lipase),RML(Rhizomucor miehei lipase),CALA(Candida antarctica lipase A)and LU(Lecitase?Ultra)were encapsulated into the nucleotidehybrid metal coordination polymers(CPs)for diacylglyerols(DAG)preparation.Guanosine 5'-monophosphate(GMP)and adenosine 5'-monophosphate(AMP)were used as coordinating molecules,and metal ions of Fe^(3+),Ba^(2+),Mn^(2+),Ni^(2+)and Cr^(3+)were applied to prepare matrix.Results indicated that,besides Ba^(2+)with AMP,all other metal ions can coordinate with AMP and GMP to generate CPs.In addition,the AMP/Ni was amorphous when standing temperature was 4℃,while it was crystalline when standing temperature was from 30 to 180℃.DAG content from 47.55%to 64.99%was obtained from glycerolysis by CALB@GMP/Ba,RML@GMP/Ba,TLL@GMP/Ba,RML@GMP/Mn and TLL@GMP/Mn.Additionally,CALB@GMP/Fe showed selectivity towards DAG formation in the esterification and DAG content up to 61.88%was obtained.
基金projects of National Natural Science Foundation of China (Grant Nos.22175025 and 21905023) for their generous financial support。
文摘The high energy coordination compounds Cu(TZCA)_(2)(ClO_(4))_(2)(ECCs-1) was prepared by 1H-tetrazole-5-carbohydrazide(TZCA) with a high energy skeleton and a strong coordination ability group.At the same time,the reaction activity of the ligand was explored,and the single crystal structure of it and intermediate were obtained.The structures of all substances were characterized by IR and EA.And the structure and composition of ECCs-1 are confirmed by ESP,AC,SEM and ICP-OES.Physical and chemical properties tests show that ECCs-1 has an acceptable thermal stability(T_(d)=177℃) and extremely sensitive mechanical stimulation(IS=1 J,FS=5 N).The comprehensive performance test results show that ECCs-1 has excellent initiation ability.In addition,the decomposition mechanism of ECCs-1 is explored from two aspects of experiment and theoretical calculation.
基金Educational Commission of Sichuan Province(12ZA106)the"211 project"Special Fund of Sichuan Agricultural University
文摘With the improvement of high-tech and emergence of crossing and new fields, lanthanide-transition (Ln-M) heterometallic coordination polymers have attracted much attention of many researchers, which exhibit novel structures and unique properties with potential applications in the nonlinear optical materials, fluorescent materials, superconducting materials, magnetic materials, catalysis, bio-simulation, adsorption and separation, and so on. It is thus necessary to summarize Ln-M heterometallic coordination polymers. According to the transition metal ions, those coordination polymers are divided into six parts to explore the current applications and future developments.
基金financially supported by the Natural Science Foundation of China(no.21576059)the Key Technologies R&D Program(no.2011BAE06B02)+1 种基金the International Science&Technology Cooperation Program of China(2010DFB60840)the Science and Technology Project of Guizhou Province(nos.[2012]6012 and[2011]3016)
文摘In this work, a series of MIL-101-SO3H(x) polymeric materials were prepared and further used for the first time as efficient heterogeneous catalysts for the conversion of fructose-based carbohydrates into 5-ethoxymethylfurfural(EMF) in a renewable mixed solvent system consisting of ethanol and tetrahydrofuran(THF). The influence of –SO3H content on the acidity as well as on the catalytic activity of the porous coordination polymers in EMF production was also studied. High EMF yields of 67.7% and 54.2% could be successively obtained from fructose and inulin in the presence of MIL-101-SO;H(100) at 130 °C for 15 h.The catalyst could be reused for five times without significant loss of its activity and the recovery process was facile and simple. This work provides a new platform by application of porous coordination polymers(PCPs) for the production of the potential liquid fuel molecule EMF from biomass in a sustainable solvent system.
基金Funded by the National Natural Science Foundation of Shanxi Province(No.2013011011-6)the Subject Team of Taiyuan University of Science and Technology
文摘Two coordination polymers, namely {[Ni(cpna)(H2biim)(H2O)]·H2O}n (1) and {[Mn(cpna)(H2biim)]·H2O}n (2) (H2cpna = 5-(2'-carboxylphenyl) nicotic acid, H2biim = 2,2'- biimidazole),have been hydrothermally synthesized and characterized by elemental analysis, IR, TG, magnetic properties, and single-crystal X-ray diffraction. Compound 1 exhibits a one- dimensional (1D) step-like chain structure, which further builds a three-dimensional (3D) supramolecular architecture via O–HAAAO and N–HAAAO hydrogen-bonding and π-π stacking interactions. Compound 2 possesses a one-dimensional (1D) double chain structure, which is further assembled into a 3D supramolecular framework by N–HAAAO hydrogen bonding and π-π stacking interactions. Magnetic susceptibility measurement indicates that compound 1 shows a weak antiferromagnetic coupling between the nearest Ni(II) centers, with g = 2.11 and J = –1.87 cm^-1.
基金supported by the National Natural Science Foundation of China(Nos.21571140 and 21671149)the Program for Innovative Research Team in University of Tianjin(TD13-5074)
文摘Two new CdⅡ-based coordination polymers(CPs) with mixed adenine(Hade) nucleobase and 5-nitroisophathalate(nip) ligands, {[Cd(Hade)_(0.5)(H_2O)_2(nip)]·H_2O}n 1 and {[Cd(Hade)(H_2O)_(1.25)(CH_3OH)0.75(nip)]·0.75 CH_3OH·0.5H_2 O}_n 2, were successfully obtained by varying the preparation methods and structurally characterized. Crystal data for 1: monoclinic, C2/c space group with a = 10.5546(6), b = 17.3496(6), c = 16.1198(9) ?, β = 104.2800(10)o, V = 2860.6(2) ?3, Dc = 2.058 g/cm^3, Mr = 443.13, Z = 8, F(000) = 1752, μ = 1.585 mm^(–1), the final R = 0.0394 and wR = 0.1109 for 2285 observed reflections with I > 2σ(I). For 2: triclinic, P1 space group with a = 10.2032(7), b = 10.5098(8), c = 11.0223(8) ?, a = 65.7050(10)o, β = 74.5750(10)o, g = 61.5280(10)o, V = 943.38(12) ?~3, Dc = 1.888 g/cm3, Mr = 536.24, Z = 2, F(000) = 537, μ = 1.225 mm^(–1), the final R = 0.0225 and wR = 0.0702 for 3143 observed reflections with I > 2σ(I). 1 presents a crisscrossed layer with mutually orthogonal {Cd(nip)} chains aggregated by neutral m-N(7),N(9)-Hade connector. By contrast, 2 displays a linear chain with CdⅡ ions extended by bis-bidentate chelating-nip2–connectors, which are further assembled into a broad ribbon by N-H···N hydrogen-bonding interactions. Additionally, the two solid-state samples with comparable thermal stability exhibit favorable luminescent emissions at room temperature, suggesting their potential applications as fluorescence materials.
基金Supported by the National Natural Science Foundation of China(Nos.20701015,21071059,20788101)
文摘Two 1D coordination polymers Cu2I(C6N3H4)2(1) and CuⅡ(C6N3H4)2·H2O(2) based on benzotriazole(Bta) were hydrothermally synthesized by controlling the crystallization temperature.Single-crystal X-ray diffraction(XRD) analyses reveal that compound 1 is a 1D tubular structure constructed from two types of 1D chains {―Cu―N=N―N―} n,where the Cu(I) ions adopt linear,triangular,and tetrahedral coordination modes to connect two types of Bta ligands via π-π interaction inside the tubular-like chain.For compound 2,the Cu(Ⅱ) ions assume a quadrilateral coordination mode linking to the Bta ligands to give 1D straight chains,which stacks through π-π interactions to construct a 2D layer structure.Further characterizations including elemental analyses,infrared IR spectra,thermogravimetric(TG) analyses and luminescence properties have been done.
基金supported by URT program of Beijing Institute of Petrochemical Technology(Beijing municipal level 2015J00058)URT program of Beijing Institute of Petrochemical Technology(State level 2015J00056)
文摘By using solvothermal method, two new metal coordination polymers based on 2,5-furandicarboxylic acid(H2FDA) ligand and 4,4'-bipyridine(bipy), [Cu(FDA)(4,4'-bipy)(DMF)]n·solvent(1) and {[Zn(4,4'-bipy)(FDA)(DMF)]·DMF}n(2), were produced and characterized by single-crystal X-ray diffraction analyses, elemental analyses, IR and powder X-ray diffraction. Compound 1 crystallizes in monoclinic space group P21/c with a = 11.104(2), b = 10.396(2), c = 18.772(4) , β = 96.20(3)o, V = 2154.2(7) 3, Dc = 1.378 g/cm^3, C19H17 Cu N3O6, Mr = 446.90, F(000) = 916, μ(Mo Kα) = 1.05 mm^-1, Z = 4, R = 0.0691 and wR = 0.1341 for 3537 observed reflections(I 2σ(I)), and R = 0.1062 and w R = 0.1482 for all data. Compound 2 crystallizes in monoclinic space group C2/c with a = 29.779(6), b = 9.6417(19), c = 17.292(3), β = 105.69(3)°, V = 4779.9(16) 3, Dc = 1.445 g/cm^3, C22H22N4O7 Zn, Mr = 519.81, F(000) = 2144, μ(Mo Kα)= 1.08 mm^-1, Z = 8, R = 0.0641 and w R = 0.1007 for 2985 observed reflections(I 2σ(I)), and R = 0.1028 and w R = 0.1112 for all data. Different coordination geometry of metal ions, square pyramid of Cu2+ and trigonal bipyramid of Zn2+, bring about different orientations of FDA2- ligands as well as 4,4'-bipyridine ligands, and furthermore distinct assembly structures for 1 and 2. The thermal stabilities of 1 and 2 are also investigated.
基金The project was supported by the scientific and technological department of Henan Province (No. 102300410269)
文摘Two new europium (Ⅲ) coordination polymers formulated as Eu2(H20)a(ox)4]· (CsH6N)2-2H20 (1) and Eu2(ad)3(H20)4]'0.25H20 (2) (H20x = oxalic acid, H2ad = adipic acid) have been synthesized from the self-assembly of lanthanide ions Eu^3+ with flexible oxalic and adipic acid ligands, respectively. Structural analyses revealed that complex 1 exhibits three-dimensional metalorganic frameworks, and 2 has intricate two-dimensional interpenetrated metal-organic networks. In addition, the photoluminescent properties of complexes 1 and 2 were discussed in detail, which shows strong red emission, corresponding to ^5Do →^7F? transition of Eu^3+ ions.
基金Supported by NSFC 20973174 and MOST project (2006DFA43020 and 2007CB815307)
文摘ABSTRACT Four novel 1D lanthanide coordination polymers with formula [Ln(3,4-pybz)3(HzO)2. H2O]n (Ln = 1 Sm; 2 Eu; 3 Tb; 4 Dy, 3,4-Hpybz = 3-(pyridin-4-yl)benzoic acid) have been synthesized by hydrothermal reactions of lanthanide oxide and 3-(pyridine-4-yl) benzoic acid. Single-crystal X-ray diffraction shows that the four compounds are isostructural. They all crystallize in a monoelinic system, space group P1^-. They have a doubly carboxylate-bridged infinite-chain structure with alternating Ln-(carboxylate)2-Ln linkages and one chelating carboxylate group on each metal center. The Ln ion also combines to two water molecules to form an eight-coordinate square antiprismatic geometry. The pyridine nitrogen atoms of the ligand do not coordinate to the metal centers but direct the formation of a 3D network through hydrogen bonding with coordinated water molecules. The photoluminescent properties of 2 and 3 have been also studied.
基金supported by the Science and Technology Development Project of Jilin Provincial Science&Technology Department(201205080)the Science and Technology Research Projects of the Education Office of Jilin Province(No.2013.384)
文摘A new Cd(II) coordination polymer, [Cd05(nba)(bib)0.5]2n (1, Hnba = 4-nitrobenzoicacid, bib = 1,4-bis(imidazol-l-yl)-butane), was synthesized at room temperature condition andcharacterized by IR spectra, elemental analyses, single-crystal and powder X-ray diffractions.Complex 1 belongs to the monoclinic system, C2/c space group, with a = 26.0600(14), b = 6.7889(4),c = 16.5825(9)A, β= 118.8120(10)°, V= 2570.6(2) A3, Z= 4. It shows one-dimensional chains andis further linked by π-π stacking interactions to yield a three-dimensional supramolecular structure.Thermal stability and luminescence of 1 were investigated.
基金supported by the State Key Laboratory of Structural Chemistry, NNSFC (20733003)Chinese Academy of Sciences (KJCX2-YW-M05)+1 种基金973 Program (2007CB815301, 2006CB932900)the NSF of Fujian Province (2006L2005, 2006J0014)
文摘The creation of a porous magnet is a long-sought academic goal since magnetism and porosity are hostile to one another. While long-range magnetic ordering needs spin carriers of short separation through short bridges, porosity relies on the use of extended connecting ligands. Here, we will give a survey of the cluster-based magnetic porous coordination polymers, i.e., 0-D MPCPs, according to their functional subunits: (1) nanoporous spin crossover materials with single metal nodes; (2) metal-radical approach with rigid organic radical ligands and single metal nodes; (C) PCPs with rigid organic ligands and metal oligomer nodes; (D) PCPs with metal complex linkers and polymetal cluster nodes; (E) PCPs with organo-polymetal cluster linkers and single metal nodes. The assembly from clusters can provide a reasonable route to resolve the hostility between magnetism and porosity. This assembly’s merits are obvious: the pore benefits from the big cluster according to "Scale Chemistry", and the functional framework inherits interesting physical properties from the clusters with a large ground spin S.
基金Supported by the Program for Science&Technology Innovation Talents in Universities of Henan Province(No.14HASTIT017)the Program for Innovative Research Team(in Science and Technology)in University of Henan Province(No.14IRTSTHN008)+1 种基金the Foundation of Education Committee of Henan Province(No.142300410301)the National Natural Science Foundation of China(No.21571093)
文摘Two new coordination polymers,named {[Co3(pfca)6(phen)2]·2H2O}n(1) and[Cu(pfca)2(4,4'-bpy)(H2O)]n(2)(Hpfca = 4-fluorocinnamic acid and 4,4-bpy = 4,4-bipyridine),were hydrothermally synthesized and characterized by elemental analysis,IR spectroscopy,thermogravimetric analysis(TGA),and single-crystal X-ray diffraction.Complex 1 crystallizes in the triclinic crystal system,space group P1 with a = 10.939(3),b = 12.430(4),c = 13.815(4) A,α=78.436(3),β= 70.261(3),γ= 80.268(3)°,V= 1721.8(9) A^3,Dc = 1.508 g/cm^3,Mr= 1564.06,Z = 1,F(000) = 799,μ= 0.802 mm^(-1),the final R = 0.0432 and wR = 0.1015 for 13250 observed reflections with I 2σ(I).Complex 2 is of monoclinic system,space group P2/lc with a =15.4985(14),b = 15.8424(14),c = 10.9528(10) A,β= 107.1600(10)°,V= 2569.6(4) A^3,Dc = 1.468g/cm^3,Mr = 568.02,Z = 4,F(000) = 1164,μ= 0.906 mm^(-1),the final R = 0.0371 and wR = 0.0842 for 18183 observed reflections with I〉 2σ(I).Complex 1 features linear Co(Ⅱ)-trinuclear units,which are assembled into a final 3D supramolecular structure through π…π stacking interactions and F-H weak interactions.Complex 2 consists of 1D polymeric Cu(Ⅱ)-chains that are further cohered together by extensive H-bonds.
基金Supported by the Key Project of Chinese Ministry of Education (No. 208116)the Scientific and Technological Project of CQEC (No. KJ080829)
文摘(E)-2,6-Dimethyl-4-styrylpyridine-3,5-dicarboxylic acid (H2mspda) is firstly employed in coordination chemistry.Two isostructural two-dimensional (2-D) 4-connected metal-organic coordination polymers with a general formula of {M2[(mspda)2(bpy)(H2O)2]}n (M=Zn(1) and Co(2)) are assembled from H2mspda,4,4'-bipyridyl (bpy),zinc and cobalt ions under hydrothermal conditions,and characterized by single-crystal X-ray diffraction analyses.Complex 1 crystallizes in monoclinic,space group P21/n with a=14.551(4),b=10.941(3),c=14.945(4),β=98.817(4)o,V=2351.3(1)3,Dc=1.511 g/cm3,μ(MoKα)=1.090 mm-1,F(000)=1104,Z=4,the final R=0.0335 and wR=0.0485 for 3296 observed reflections (I 〉 2σ(I)).In compound 1,mspda2-spacers are only arrayed in a head-to-tail fashion which corresponds to a 2-D coordination polymer.Solid-state H2mspda and complex 1 have expected photoluminescence (λem=475~496 nm) at room temperature.
基金supported by the Fundamental Research Funds for the Central Universities(JB-ZR1119)the Research Foundation for Talented Scholars(09BS518,13B0095)+1 种基金the NSF of Fujian Province(Nos.2013J01237)the Educational Office of Fujian Province(JA12010)
文摘Three lanthanide coordination polymers [Ln(bcpb)0.5(NO3)(DEF)2] (Ln = Y (1), Tb (2), Eu (3), H4bcpb = 2,5-bis(2,4-dicarboxyphenyl) pyridine and DEF = N,N-diethylformamide)) have been solvothermally synthesized under hydrothermal conditions with a novel Hnbcpb ligand and trivalent lanthanide nitrates. Single-crystal X-ray diffraction analysis reveals that compounds 1-3 are isostructural and crystallize in the monoclinic system, space group P21/n. Crystal data for 1: C20H26N409Y, Mr = 555.36, a = 13.022(9), b = 17.778(12), c = 10.861(8) A, β= 100.208(3)°, V = 2475(3) A3, Z = 4; Crystal data for 2: C20H26N4OgTb, Mr = 625.37, a = 13.0476(4), b = 17.8037(7), c = 10.9398(3) A, β = 100.008(4)°, V = 2496.4(12) A3, Z = 4; Crystal data for 3: C20H26N409Eu, Mr = 618.41, a = 13.055(4), b = 17.833(5), c = 10.893(3)A, β = 100.133(4)°, V= 2496.4(12) A3, Z = 4. The compounds were characterized by thermogravimetric analysis (TGA), IR spectroscopy, and X-ray single-crystal diffraction. Compounds 1-3 all feature 2D networks with -ABAB- fashions. The luminescent properties of compounds 1-3 and free H4bcpb ligand were investigated at room temperature. The results show that the H4bcpb ligand can efficiently transfer energy to the Tb(III) ions, while the energy is not fully transferred from the H4bcpb ligand to the Eu(III) ions.
基金Supported by the NNSFC (21071025,91122031, 21107008)Doctoral Fund of Ministry of Education of China (20100041120021)the Fundamental Research Funds for the Central Universities (DUT12YQ04)
文摘The assembly reactions of o- (or m-, or p-) tetrafluorobenzenedicarboxylic acid (denoted as o-H2L, m-H2L and p-HzL, respectively), benzonitrile and Ag+ ion led to three compounds: [Ag2(PhCN)2(o-HL)2]n (1), [Ag2(PhCN)2(m-HL)2]n (2) and [Ag2(PhCN)2(p-L)], (3). 1 and 2 feature a 1D coordination chain, while 3 bears a 2D net structure. A variety of weak interactions are observed in the compounds. Strong nwrinteractions connect the 1D chains into a 3D supramolecular network in 1. Hydrogen bonds connect the chains into layers in 2. Three types of interesting π-π interactions also assemble the 2D layers into a 3D overall structure in 3.
基金Supported by the Natural Science Foundation of Anhui Province(KJ2016A512)Key projects of Anhui Province University Outstanding Youth Talent Support Program(gxyqZD2016372)
文摘Two new cadmium(II) and zinc(II) coordination polymers, {[Cd(btre)0.5- (mip)(H2O)2]·H2O}n (1) and [Zn(btre)(mip)]n (2), were synthesized at room temperature condition and characterized by IR spectra, elemental analyses, single-crystal and powder X-ray diffractions (btre = 1,2-bis(1,2,4-triazol-4-yl)ethane, H2mip = 5-methyl-1,3-benzenedicarboxylic acid). Complex 1 belongs to the triclinic system, P space group, with a = 8.9830(6), b = 10.0579(6), c = 10.2479(9) , α = 98.837(6), β = 115.975(8), γ = 106.370(6)°, V = 756.30(11) 3 and Z = 2; complex 2 crystallizes in monoclinic, space group P21/c, with a = 7.0332(3), b = 14.9947(7), c = 15.9689(7) ?, β = 97.1170(10)°, V = 1671.12(13) ?3 and Z = 4. Compounds 1 and 2 based on the same N/O-donor ligands show different structures. The one-dimensional chains of 1 are further linked by hydrogen bonding and π-π interactions to yield a three-dimensional supramolecular structure. The two-dimensional (6,3) networks of 2 are further extended into a 3D framework via π-π interactions. Thermal stabilities and luminescence of 1 and 2 were investigated.
基金Supported by NNSFC (21071024)the Chizhou University (2010RC005)the Materials Key Subject of Chizhou University (2011XK04)
文摘Two new coordination polymers,[Co(BIPA)(bpp)](1) and [Zn(BIPA)(bpp)(H2O)](2)(H2BIPA = 5-bromoisophthalic acid,bpp = 1,3-di(4-pyridyl)propane) have been synthesized via hydrothermal reactions.The two compounds were characterized by elemental analysis,IR spectra,TG analysis and single-crystal X-ray determination.Compound 1 crystallizes in triclinic,space group P1 with a = 9.0316(13),b = 10.1179(14),c = 11.8884(17) ,α = 68.022(2),β = 84.749(2),γ = 77.791(2)°,V = 984.5(2) 3,Z = 2,C21H17BrN2O4Co,Mr = 500.21,Dc = 1.687 g.cm-3,μ = 2.932 mm-1,S = 0.981,F(000) = 502,R = 0.0440 and wR = 0.1357 for 3773 observed reflections with I 2σ(I).Compound 2 crystallizes in the monoclinic system,space group P21/c with a = 7.8466(10),b = 27.483(4),c = 9.6583(13) ,β = 96.663(3)°,V = 2068.8(5) 3,Z = 4,C21H19BrN2O5Zn,Mr = 524.66,Dc = 1.685 g.cm-3,μ = 3.155 mm-1,S = 0.969,F(000) = 1056,R = 0.0441 and wR = 0.0517 for 4058 observed reflections with I 2σ(I).The two compounds are constructed from the BIPA2-and bpp ligands but they exhibit different kinds of one-dimensional chain structures.In 1,the chains are composed of the Co(Ⅱ) ions and BIPA2-ligands,and the chains are further extended into a 2D framework structure by π...π interactions of the benzene rings from the BIPA2-ligands between the adjacent chains.In 2,the chains are made up of Zn(Ⅱ) ions and BIPA2-ligands through another fashion,and the chains are further linked via hydrogen bonding interactions to yield a two-dimensional supramolecular layer structure.Furthermore,the bpp ligand features two kinds of different coordination modes in the two compounds.
基金Funded by the National Natural Science Foundation of Shanxi Province(No.2013011011-6)the Subject Team of Taiyuan University of Science and Technology
文摘Two coordination polymers, namely [Pb(Hbtc)(phen)]n(1) and {[Cd3(btc)2(H2O)4]·2H2O}n(2, H3btc = biphenyl-2,5,3'-tricarboxylic acid, phen = 1,10-phenanthroline), were assembled. Single-crystal X-ray diffraction studies show that compound 1 possesses a zigzag chain 1D coordination network, which is further extended into a 3D supramolecular architecture via O–H···O hydrogen bonds and π-π packing interactions. Compound 2 features a 3D open framework based on a tricadmium(II) subunit, generating a trinodal 4,4,6-connected net with the 4,4,6T24 topology defined by the point symbol of(44·62)3(46·69)2. Thermal stability and luminescent properties of both compounds were studied and discussed.