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
A metal-organic coordination polymer [Cd(tdc)(bimb)(μ2-H2O)]n (H2tdc = thiophe-ne-2,5-dicarboxylic acid, bimb = 1,4-bis(imidazol-l-yl)-butane) 1 has been hydrothermally synthe- sized and characterized by el...A metal-organic coordination polymer [Cd(tdc)(bimb)(μ2-H2O)]n (H2tdc = thiophe-ne-2,5-dicarboxylic acid, bimb = 1,4-bis(imidazol-l-yl)-butane) 1 has been hydrothermally synthe- sized and characterized by elemental analysis, IR, TG, luminescence spectrum and single-crystal X-ray diffraction. Colorless crystals crystallize in the triclinic system, space group P^-1 with a = 5.8945(3), b = 10.3129(5), c = 11.2226(5) A, a = 95.1430(10),β = 97.9020(10), γ = 90.5910(10)°, V = 672.84(6) A^3, C11H11CdN2O5S, Mr= 395.68, De = 1.953 g/cm^3, μ(MoKa) = 1.797 mm^-1, F(000) = 390, Z = 2, the final R = 0.0209 and wR = 0.0508 for 2514 observed reflections (I 〉 2σ(I)). The structure of 1 exhibits a two-dimensional layer-like structure.展开更多
A new Cd(Ⅱ) coordination polymer, namely, [Cd(1,3-bip)(3,5-pdc)]n (1,3-bip = 1,3-bis(imidazol)propane and 3,5-pdc = pyridine-3,5-dicarboxylic acid) has been synthesized under hydrothermal conditions. Compou...A new Cd(Ⅱ) coordination polymer, namely, [Cd(1,3-bip)(3,5-pdc)]n (1,3-bip = 1,3-bis(imidazol)propane and 3,5-pdc = pyridine-3,5-dicarboxylic acid) has been synthesized under hydrothermal conditions. Compound 1 was characterized by infrared spectrum, elemental analysis, powder X-ray diffraction (PXRD) and single-crystal X-ray diffraction analysis. It crystallizes in monoclinic, space group P21/c with a = 1.40178(7), b = 1.72502(12), c = 1.41635(6) ran, β = 92.653(4)°, V = 3.4212(3) nm3, Z = 4, C16HIsCdNsO4, Mr = 453.73, Dc = 1.762 g/cm3, F(000) = 1808,μ = 1.310 mm1, R = 0.0899 and wR = 0.1945. In compound 1, each 3,5-pdc ligand links three Cd(lI) ions and each Cd(Ⅱ) attaches to bip ligands to form a complicated 2D double-layer structure. In addition, the thermal stability and luminescent property of 1 have been studied in the solid state at room temperature.展开更多
A one-dimensional chain coordination polymer [Cu(phen)(2,4,6-TMBA)2(H2O)]n has been synthesized by reacting 2,4,6-trimethyl-benzoic acid, 1,10-phenanthroline and Cu(Ⅱ) perchlorate and its structure was charac...A one-dimensional chain coordination polymer [Cu(phen)(2,4,6-TMBA)2(H2O)]n has been synthesized by reacting 2,4,6-trimethyl-benzoic acid, 1,10-phenanthroline and Cu(Ⅱ) perchlorate and its structure was characterized. Crystal data for this complex: tetragonal, space group I41, a = 2.0293(3), b = 2.0293(3), c = 1.3758(2) nm, α =β= γ = 90°, V= 5.6657(13) nm3, Dc= 1.379 g/cm3, Z = 8, μ(MoKa) = 0.815 mm-1, Mr = 588.14, F(000) = 2456, S = 1.047, R = 0.0459 and wR = 0.1053. The crystal structure shows that two neighboring Cu(Ⅱ) ions are linked together by one bridging-chelating 2,4,6-trimethyl-benzoic group, forming a one-dimensional chain structure. Each Cu(Ⅱ) ion is coordinated with two nitrogen atoms from one 1,10-phenanthroline molecule, three oxygen atoms from three 2,4,6-trimethyl-benzoic acid molecules and one oxygen atom from one water molecule, giving a six-coordinate distorted octahedral coordination geometry. The cyclic voltammetry behavior of the complex was also investigated.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
A new 2D Zn(Ⅱ) coordination polymer [Zn(HIDC)(bix)0.5]n(1) was obtained by the hydrothermal reaction of ZnCl2,imidazole-4,5-dicarboxylic acid(H3IDC) and 1,4-bis(imidazol-1-ylmethyl)-benzene(bix) with a ...A new 2D Zn(Ⅱ) coordination polymer [Zn(HIDC)(bix)0.5]n(1) was obtained by the hydrothermal reaction of ZnCl2,imidazole-4,5-dicarboxylic acid(H3IDC) and 1,4-bis(imidazol-1-ylmethyl)-benzene(bix) with a 2:2:1 mole ratio.X-ray diffraction crystal structural analysis reveals it crystallizes in monoclinic,space group P21/n with a = 12.125(3),b = 10.541(3),c = 12.484(3) ,β = 115.834(4)°,V = 1436.0(6) 3,Mr = 338.60,Z = 4,Dc = 1.566 Mg·m-3,F(000) = 684,μ(MoKα) = 1.730 mm-1,the final R = 0.0439 and wR = 0.0888 for 2101 observed reflections with I ≥ 2σ(I).In 1,each zinc(Ⅱ) ion is five-coordinated with a slightly distorted trigonal bipy-ramidal coordination geometry,and each μ2-HIDC2-acts as a bridge to bond two neighboring Zn(Ⅱ) ions,leading to a 1D zigzag chain architecture.The adjacent zigzag chains are further linked by μ2-bix to form an infinite 2D network structure.The fluorescence spectrum of 1 exhibits intense emission at 466 nm when excited at 397 nm in solid state at room temperature.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
A new coordination polymer, [Mn(L)(1,4-bdc)] (L = 11-fluoro-dipyrido[3,2- a:2",3 "- c]phenazine, 1,4-bdc - benzene-1,4-dicarboxylate), has been synthesized through the hydrothermal method and characterized by...A new coordination polymer, [Mn(L)(1,4-bdc)] (L = 11-fluoro-dipyrido[3,2- a:2",3 "- c]phenazine, 1,4-bdc - benzene-1,4-dicarboxylate), has been synthesized through the hydrothermal method and characterized by elemental analysis, IR and single-crystal X-ray diffraction. It crystallizes in triclinic, space group P1 with a = 9.7544(9), b = 10.8254(10), c = 11.5288(10) A, a = 114.1300(10), β = 96.6110(10), y = 105.0390(10)°, V= 1038.62(16)/k3, Z= 2, C26H13FMnN404, Mr = 519.34, Dc = 1.661 g/cm3, F(000) = 526, ,u(MoKa) = 0.691 mm^-, R = 0.0405 and wR = 0.0977. The 1,4-bdc dianions link the neighboring Mn(II) atoms to yield a two-dimensional layer structure. The L ligands are attached on both sides of the layer. The π-π interactions between the L ligands of neighboring layers result in a three-dimensional supramolecular architecture.展开更多
A metal-organic coordination polymer {[Zn(Pht)(4,4'-bipy)(H2O)2]·2H2O}n (Pht = phthalate, 4,4'-bipy = 4,4'-bipyridine) 1 has been hydrothermally synthesized and characterized by elemental analysis, IR,...A metal-organic coordination polymer {[Zn(Pht)(4,4'-bipy)(H2O)2]·2H2O}n (Pht = phthalate, 4,4'-bipy = 4,4'-bipyridine) 1 has been hydrothermally synthesized and characterized by elemental analysis, IR, TG, fluorescence spectrum and single-crystal X-ray diffraction. Yellow crystals crystallize in the monoclinic system, space group P2/n, a = 7.6346(14), b = 11.316(2), c = 10.8133(19) ,A, β = 92.A.A,A.(3)°, V = 933.3(3) A^3, C18H20N2O8Zn, Mr = 457.73, Dc = 1.629 g/cm^3, F(000) = 472, Z = 2,μ(MoKa) = 1.367 mm^-1, the final R = 0.0323 and wR = 0.0821 for 1859 observed reflections (Ⅰ〉 2σ(Ⅰ)). The structure of 1 exhibits a two-dimensional bilayer framework formed by hydrogen bonding interactions. Furthermore, 1 shows yellow photoluminescent property at room temperature.展开更多
A new coordination polymer,{[Ag2(bpp)2(H2O)2]·bpdc·3H2O}n,derived from the ligand biphenyl-4,4'-dicarboxylic acid(H2bpdc),has been obtained through a hydrothermal technique(bpp = l,3-bis(4-pyridyl)...A new coordination polymer,{[Ag2(bpp)2(H2O)2]·bpdc·3H2O}n,derived from the ligand biphenyl-4,4'-dicarboxylic acid(H2bpdc),has been obtained through a hydrothermal technique(bpp = l,3-bis(4-pyridyl)propane).Its single-crystal structure has been characterized by single-crystal X-ray diffraction,powder XRD,FT-IR,TGA and elemental analysis techniques.The single-crystal X-ray diffraction reveals that complex 1 consists of 1D infinite[Ag(bpp)(H2O)]n^(n+)cationic chains,2D anionic layer constructed by bpdc anions and free water which provide charge compensation in the crystal structure.The 1D infinite[Ag(bpp)(H2O)]n^(n+) cationic chains and 2D anionic layer are further stacked in-ABAB- fashion through intermolecular H-bonding to form a 3D sandwich-like framework.In addition,the luminescent property of complex 1 in the solid state at room temperature was investigated.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
A new Cd(II) coordination polymer, namely, [Cd3(1,2,3-BTC)2(L)2]·2.25H2O (1, L = 2-(2-chloro-6-fluorophenyl)-1H-imidazo[4,5-A][1,10]phenanthroline and 1,2,3-BTC = 1,2,3-ben- zenetricarboxylate), has bee...A new Cd(II) coordination polymer, namely, [Cd3(1,2,3-BTC)2(L)2]·2.25H2O (1, L = 2-(2-chloro-6-fluorophenyl)-1H-imidazo[4,5-A][1,10]phenanthroline and 1,2,3-BTC = 1,2,3-ben- zenetricarboxylate), has been synthesized under hydrothermal conditions. The compound was characterized by single-crystal X-ray diffraction. It crystallizes in triclinic, space group Pī with α = 11.650(2), b = 12.240(2), c = 19.760(4) A, α = 72.01(3), β = 77.11(3), γ = 83.48(3)°, V = 2609.4(9) A3, Z = 2, C56H31Cd3Cl2F2N8O14.25, Mr = 1489.99, Dc = 1.896 g/cm3, F(000) = 1466, μ(MoKa) = 1.401 mm^-1, R = 0.0401 and wR = 0.1104. Compound 1 shows a 1D chain structure, and the neigh- boring 1D chains of 1 are joined together by π···π interactions to result in a 2D supramolecular layer. In addition, the luminescent property of 1 has been studied in the solid state at room temperature.展开更多
A new two-dimensional cobalt coordination polymer has been prepared and fully characterized by elemental analysis, IR, TG and single-crystal X-ray diffraction. The compound [Co(C2O4)(bix)]n 1 crystallizes in the m...A new two-dimensional cobalt coordination polymer has been prepared and fully characterized by elemental analysis, IR, TG and single-crystal X-ray diffraction. The compound [Co(C2O4)(bix)]n 1 crystallizes in the monoclinic system, space group C2/c, with a = 11.549(3), b = 15.700(3), c = 9.260(2) A, β = 102.984(3)°, V = 1636.0(6) A^3, C16HIaCON4O4, Mr= 383.23, Dc = 1.556 g/cm^3, μ(MoKa) = 1.078 mm^-1, F(000) = 780, Z = 4, the final R = 0.0455 and wR = 0.1286 for 1483 observed reflections (I 〉 2σ(I)). Of the compound, the Co center is octahedrally coordinated with oxalate acting as a tetra-dentate ligand coordinated to the cobalt atom and each bix serving as a bridging ligand by employing two N-donors to coordinate with the Co center. An infinite {Co2(C2O4)2}∞ chain is formed along the α axis. Furthermore, the 1D chains are held together via bix ligands to generate a two-dimensional network structure with 1D coronal-like channels (ca. 5.691A × 15.700A).展开更多
A novel Fe(II) coordination polymer [Fe(L)(trans-1,4-chdc)];~ has been hydrother- mally synthesized by using 1,4-cyclohexanedicarboxylic acid (1,4-H2chdc) and 2-(2-fluoro- phenyl)-lH-imidazo[4,5-f][1,10]phen...A novel Fe(II) coordination polymer [Fe(L)(trans-1,4-chdc)];~ has been hydrother- mally synthesized by using 1,4-cyclohexanedicarboxylic acid (1,4-H2chdc) and 2-(2-fluoro- phenyl)-lH-imidazo[4,5-f][1,10]phenanthroline (L). Crystallographic data: monoclinic, space group C2/c with a = 14.571(5), b = 32.389(6), c = 10.948(5)A, 18 = 115.186(5)°, V= 4676(3)A3, Z = 8, C27H21FFeN404, Mr = 540.33, De --- 1.535 g/cm3, F(000) = 2224, μ(MoKa) = 0.697 mmI, R = 0.0462 and wR = 0.1110. The two kinds of trans-l,4-chdc ligands link neighboring Fe(II) atoms to yield a two-dimensional layer structure. The π-π interactions between the L ligands of neighboring layers result in a three-dimensional supramolecular architecture. The IR and UV-vis spectra of the compound have been investigated in detail.展开更多
A new dinuclear Y(3+) coordination polymer{[Y2(H2O)2(C(14)H8O4)3(C(12)H8N2)2]·3 H2O}n (1, C(14)H8 O4 = 2,2'-biphenyldicarboxylate, phen = 1,10-phenanthroline), has been obtained by means of a mi...A new dinuclear Y(3+) coordination polymer{[Y2(H2O)2(C(14)H8O4)3(C(12)H8N2)2]·3 H2O}n (1, C(14)H8 O4 = 2,2'-biphenyldicarboxylate, phen = 1,10-phenanthroline), has been obtained by means of a mixed-solvothermal method using ethylene glycol and water as solvent. The compound was characterized by elemental analysis, energy-dispersive X-ray spectroscopy(EDS), IR spectrum and single-crystal X-ray diffraction. The results reveal that 1 belongs to monoclinic system, space group C2/c with a = 24.249(3), b = 12.069(48), c = 22.7304(08) A, β = 113.480(7)°, Z = 4, V = 6102(2) A3, Dc = 1.462 g·cm^-3, F(000) = 2728, μ = 1.968 mm(-1), the final R = 0.0673, w R = 0.1508 and S = 1.085. Its structure can be regarded as a 1-D coordination polymer constructed by Y^3+ cations, 2,2A-biphenyldicarboxylate, 1,10-phenanthroline and water molecules. The compound not only contains two kinds of organic ligands, but also exhibits interesting wave-like infinite chains and 18-MR windows with the diameter of 4.070(7)A × 5.326(9)A. The structure is further stabilized by means of O–H…O hydrogen bonds and π-π stacking interactions. Furthermore, the luminescent properties(including emission spectrum, CIE chromaticity coordinate and decay curve) of 1 were also investigated in the solid-state at room temperature.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
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
A new ID coordination polymer, [Cda(L1)2(L2)2].H2O (1, H2L1 = 4-(carboxy- methoxy)benzoic acid and L2 = 2-(4-fluorophenyl)-I H-imidazo[4,5-f][1,10]phenanthroline), has been hydrothermally synthesized and cha...A new ID coordination polymer, [Cda(L1)2(L2)2].H2O (1, H2L1 = 4-(carboxy- methoxy)benzoic acid and L2 = 2-(4-fluorophenyl)-I H-imidazo[4,5-f][1,10]phenanthroline), has been hydrothermally synthesized and characterized by elemental analysis and single-crystal X-ray diffraction. It crystallizes in triclinic, space group P1 with a = 9.985(5), b = 10.768(5), c = 12.512(5) A, a = 68.959(5), β = 80.354(5), γ = 79.663(5)°, V= 1227.4(10) A3, Z = 1, C56H36Cd2F2N8O11, Mr = 1259.73, Dc = 1.704 g/cm3, F(000) = 630, μ(MoKa) = 0.949 mm-1, R = 0.0261 and wR = 0.0655. The L1 anions link the neighboring Cd(II) atoms to form a 1D double chain structure. The L2 ligands are alternately located on both sides of the double chains. More interestingly, the lateral L2 ligands from adjacent double chains are paired to furnish strong π-π interactions, yielding a 2D supramolecular layer. N-H...O, O-H...N and O-H...O hydrogen bonds further stabilize the structure of 1. The luminescent property of 1 was studied in solid state at room temperature.展开更多
Nanowire coordination polymer cobalt–terephthalonitrile(Co-BDCN) was successfully synthesized using a simple solvothermal method and applied as anode material for lithium-ion batteries(LIBs). A reversible capacity of...Nanowire coordination polymer cobalt–terephthalonitrile(Co-BDCN) was successfully synthesized using a simple solvothermal method and applied as anode material for lithium-ion batteries(LIBs). A reversible capacity of 1132 mAh g^(-1) was retained after 100 cycles at a rate of 100 mAg^(-1), which should be one of the best LIBs performances among metal organic frameworks and coordination polymers-based anode materials at such a rate. On the basis of the comprehensive structural and morphology characterizations including fourier transform infrared spectroscopy,~1 H NMR,^(13)C NMR, and scanning electron microscopy, we demonstrated that the great electrochemical performance of the as-synthesized Co-BDCN coordination polymer can be attributed to the synergistic effect of metal centers and organic ligands, as well as the stability of the nanowire morphology during cycling.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supported by the Science and Technology Research Projects of the Education Department of Jilin Province (No. 2012.479)
文摘A metal-organic coordination polymer [Cd(tdc)(bimb)(μ2-H2O)]n (H2tdc = thiophe-ne-2,5-dicarboxylic acid, bimb = 1,4-bis(imidazol-l-yl)-butane) 1 has been hydrothermally synthe- sized and characterized by elemental analysis, IR, TG, luminescence spectrum and single-crystal X-ray diffraction. Colorless crystals crystallize in the triclinic system, space group P^-1 with a = 5.8945(3), b = 10.3129(5), c = 11.2226(5) A, a = 95.1430(10),β = 97.9020(10), γ = 90.5910(10)°, V = 672.84(6) A^3, C11H11CdN2O5S, Mr= 395.68, De = 1.953 g/cm^3, μ(MoKa) = 1.797 mm^-1, F(000) = 390, Z = 2, the final R = 0.0209 and wR = 0.0508 for 2514 observed reflections (I 〉 2σ(I)). The structure of 1 exhibits a two-dimensional layer-like structure.
基金Supported by the National Natural Science Foundation of China(No.21373132)the Science Foundation of Education Department of Shaanxi Provincial Government(No.12JK0637)
文摘A new Cd(Ⅱ) coordination polymer, namely, [Cd(1,3-bip)(3,5-pdc)]n (1,3-bip = 1,3-bis(imidazol)propane and 3,5-pdc = pyridine-3,5-dicarboxylic acid) has been synthesized under hydrothermal conditions. Compound 1 was characterized by infrared spectrum, elemental analysis, powder X-ray diffraction (PXRD) and single-crystal X-ray diffraction analysis. It crystallizes in monoclinic, space group P21/c with a = 1.40178(7), b = 1.72502(12), c = 1.41635(6) ran, β = 92.653(4)°, V = 3.4212(3) nm3, Z = 4, C16HIsCdNsO4, Mr = 453.73, Dc = 1.762 g/cm3, F(000) = 1808,μ = 1.310 mm1, R = 0.0899 and wR = 0.1945. In compound 1, each 3,5-pdc ligand links three Cd(lI) ions and each Cd(Ⅱ) attaches to bip ligands to form a complicated 2D double-layer structure. In addition, the thermal stability and luminescent property of 1 have been studied in the solid state at room temperature.
基金supported by the Foundation of Education Committee of Hunan Province(06C195)the Research Award Fund for Outstanding Young Teachers of Hengyang Normal University(2006)Supported by the construct program of the key discipline in hunan province.
文摘A one-dimensional chain coordination polymer [Cu(phen)(2,4,6-TMBA)2(H2O)]n has been synthesized by reacting 2,4,6-trimethyl-benzoic acid, 1,10-phenanthroline and Cu(Ⅱ) perchlorate and its structure was characterized. Crystal data for this complex: tetragonal, space group I41, a = 2.0293(3), b = 2.0293(3), c = 1.3758(2) nm, α =β= γ = 90°, V= 5.6657(13) nm3, Dc= 1.379 g/cm3, Z = 8, μ(MoKa) = 0.815 mm-1, Mr = 588.14, F(000) = 2456, S = 1.047, R = 0.0459 and wR = 0.1053. The crystal structure shows that two neighboring Cu(Ⅱ) ions are linked together by one bridging-chelating 2,4,6-trimethyl-benzoic group, forming a one-dimensional chain structure. Each Cu(Ⅱ) ion is coordinated with two nitrogen atoms from one 1,10-phenanthroline molecule, three oxygen atoms from three 2,4,6-trimethyl-benzoic acid molecules and one oxygen atom from one water molecule, giving a six-coordinate distorted octahedral coordination geometry. The cyclic voltammetry behavior of the complex was also investigated.
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.
文摘A new 2D Zn(Ⅱ) coordination polymer [Zn(HIDC)(bix)0.5]n(1) was obtained by the hydrothermal reaction of ZnCl2,imidazole-4,5-dicarboxylic acid(H3IDC) and 1,4-bis(imidazol-1-ylmethyl)-benzene(bix) with a 2:2:1 mole ratio.X-ray diffraction crystal structural analysis reveals it crystallizes in monoclinic,space group P21/n with a = 12.125(3),b = 10.541(3),c = 12.484(3) ,β = 115.834(4)°,V = 1436.0(6) 3,Mr = 338.60,Z = 4,Dc = 1.566 Mg·m-3,F(000) = 684,μ(MoKα) = 1.730 mm-1,the final R = 0.0439 and wR = 0.0888 for 2101 observed reflections with I ≥ 2σ(I).In 1,each zinc(Ⅱ) ion is five-coordinated with a slightly distorted trigonal bipy-ramidal coordination geometry,and each μ2-HIDC2-acts as a bridge to bond two neighboring Zn(Ⅱ) ions,leading to a 1D zigzag chain architecture.The adjacent zigzag chains are further linked by μ2-bix to form an infinite 2D network structure.The fluorescence spectrum of 1 exhibits intense emission at 466 nm when excited at 397 nm in solid state at room temperature.
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Supported by the Institute Foundation of Siping City (No.2009011)
文摘A new coordination polymer, [Mn(L)(1,4-bdc)] (L = 11-fluoro-dipyrido[3,2- a:2",3 "- c]phenazine, 1,4-bdc - benzene-1,4-dicarboxylate), has been synthesized through the hydrothermal method and characterized by elemental analysis, IR and single-crystal X-ray diffraction. It crystallizes in triclinic, space group P1 with a = 9.7544(9), b = 10.8254(10), c = 11.5288(10) A, a = 114.1300(10), β = 96.6110(10), y = 105.0390(10)°, V= 1038.62(16)/k3, Z= 2, C26H13FMnN404, Mr = 519.34, Dc = 1.661 g/cm3, F(000) = 526, ,u(MoKa) = 0.691 mm^-, R = 0.0405 and wR = 0.0977. The 1,4-bdc dianions link the neighboring Mn(II) atoms to yield a two-dimensional layer structure. The L ligands are attached on both sides of the layer. The π-π interactions between the L ligands of neighboring layers result in a three-dimensional supramolecular architecture.
基金The project was supported by the Education Office of Jilin Province (No. 0047)
文摘A metal-organic coordination polymer {[Zn(Pht)(4,4'-bipy)(H2O)2]·2H2O}n (Pht = phthalate, 4,4'-bipy = 4,4'-bipyridine) 1 has been hydrothermally synthesized and characterized by elemental analysis, IR, TG, fluorescence spectrum and single-crystal X-ray diffraction. Yellow crystals crystallize in the monoclinic system, space group P2/n, a = 7.6346(14), b = 11.316(2), c = 10.8133(19) ,A, β = 92.A.A,A.(3)°, V = 933.3(3) A^3, C18H20N2O8Zn, Mr = 457.73, Dc = 1.629 g/cm^3, F(000) = 472, Z = 2,μ(MoKa) = 1.367 mm^-1, the final R = 0.0323 and wR = 0.0821 for 1859 observed reflections (Ⅰ〉 2σ(Ⅰ)). The structure of 1 exhibits a two-dimensional bilayer framework formed by hydrogen bonding interactions. Furthermore, 1 shows yellow photoluminescent property at room temperature.
基金supported by the National Natural Science Foundation of China(No.21373132)the Foundation of Shaanxi university of technology(No.SLGKY15-36)
文摘A new coordination polymer,{[Ag2(bpp)2(H2O)2]·bpdc·3H2O}n,derived from the ligand biphenyl-4,4'-dicarboxylic acid(H2bpdc),has been obtained through a hydrothermal technique(bpp = l,3-bis(4-pyridyl)propane).Its single-crystal structure has been characterized by single-crystal X-ray diffraction,powder XRD,FT-IR,TGA and elemental analysis techniques.The single-crystal X-ray diffraction reveals that complex 1 consists of 1D infinite[Ag(bpp)(H2O)]n^(n+)cationic chains,2D anionic layer constructed by bpdc anions and free water which provide charge compensation in the crystal structure.The 1D infinite[Ag(bpp)(H2O)]n^(n+) cationic chains and 2D anionic layer are further stacked in-ABAB- fashion through intermolecular H-bonding to form a 3D sandwich-like framework.In addition,the luminescent property of complex 1 in the solid state at room temperature was investigated.
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 Science and Technology Research Projects of the Education Committee of Jilin Province(No.2013212)
文摘A new Cd(II) coordination polymer, namely, [Cd3(1,2,3-BTC)2(L)2]·2.25H2O (1, L = 2-(2-chloro-6-fluorophenyl)-1H-imidazo[4,5-A][1,10]phenanthroline and 1,2,3-BTC = 1,2,3-ben- zenetricarboxylate), has been synthesized under hydrothermal conditions. The compound was characterized by single-crystal X-ray diffraction. It crystallizes in triclinic, space group Pī with α = 11.650(2), b = 12.240(2), c = 19.760(4) A, α = 72.01(3), β = 77.11(3), γ = 83.48(3)°, V = 2609.4(9) A3, Z = 2, C56H31Cd3Cl2F2N8O14.25, Mr = 1489.99, Dc = 1.896 g/cm3, F(000) = 1466, μ(MoKa) = 1.401 mm^-1, R = 0.0401 and wR = 0.1104. Compound 1 shows a 1D chain structure, and the neigh- boring 1D chains of 1 are joined together by π···π interactions to result in a 2D supramolecular layer. In addition, the luminescent property of 1 has been studied in the solid state at room temperature.
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. 2012. 358)
文摘A new two-dimensional cobalt coordination polymer has been prepared and fully characterized by elemental analysis, IR, TG and single-crystal X-ray diffraction. The compound [Co(C2O4)(bix)]n 1 crystallizes in the monoclinic system, space group C2/c, with a = 11.549(3), b = 15.700(3), c = 9.260(2) A, β = 102.984(3)°, V = 1636.0(6) A^3, C16HIaCON4O4, Mr= 383.23, Dc = 1.556 g/cm^3, μ(MoKa) = 1.078 mm^-1, F(000) = 780, Z = 4, the final R = 0.0455 and wR = 0.1286 for 1483 observed reflections (I 〉 2σ(I)). Of the compound, the Co center is octahedrally coordinated with oxalate acting as a tetra-dentate ligand coordinated to the cobalt atom and each bix serving as a bridging ligand by employing two N-donors to coordinate with the Co center. An infinite {Co2(C2O4)2}∞ chain is formed along the α axis. Furthermore, the 1D chains are held together via bix ligands to generate a two-dimensional network structure with 1D coronal-like channels (ca. 5.691A × 15.700A).
基金Supported by the Institute Foundation of Siping City(No.2009011)
文摘A novel Fe(II) coordination polymer [Fe(L)(trans-1,4-chdc)];~ has been hydrother- mally synthesized by using 1,4-cyclohexanedicarboxylic acid (1,4-H2chdc) and 2-(2-fluoro- phenyl)-lH-imidazo[4,5-f][1,10]phenanthroline (L). Crystallographic data: monoclinic, space group C2/c with a = 14.571(5), b = 32.389(6), c = 10.948(5)A, 18 = 115.186(5)°, V= 4676(3)A3, Z = 8, C27H21FFeN404, Mr = 540.33, De --- 1.535 g/cm3, F(000) = 2224, μ(MoKa) = 0.697 mmI, R = 0.0462 and wR = 0.1110. The two kinds of trans-l,4-chdc ligands link neighboring Fe(II) atoms to yield a two-dimensional layer structure. The π-π interactions between the L ligands of neighboring layers result in a three-dimensional supramolecular architecture. The IR and UV-vis spectra of the compound have been investigated in detail.
基金supported by the National Natural Science Foundation of China(No.21601095)the Youth Project of Nanyang Normal University(No.QN2017065)the Opening Laboratory Project of Nanyang Normal University(No.SYKF2016075)
文摘A new dinuclear Y(3+) coordination polymer{[Y2(H2O)2(C(14)H8O4)3(C(12)H8N2)2]·3 H2O}n (1, C(14)H8 O4 = 2,2'-biphenyldicarboxylate, phen = 1,10-phenanthroline), has been obtained by means of a mixed-solvothermal method using ethylene glycol and water as solvent. The compound was characterized by elemental analysis, energy-dispersive X-ray spectroscopy(EDS), IR spectrum and single-crystal X-ray diffraction. The results reveal that 1 belongs to monoclinic system, space group C2/c with a = 24.249(3), b = 12.069(48), c = 22.7304(08) A, β = 113.480(7)°, Z = 4, V = 6102(2) A3, Dc = 1.462 g·cm^-3, F(000) = 2728, μ = 1.968 mm(-1), the final R = 0.0673, w R = 0.1508 and S = 1.085. Its structure can be regarded as a 1-D coordination polymer constructed by Y^3+ cations, 2,2A-biphenyldicarboxylate, 1,10-phenanthroline and water molecules. The compound not only contains two kinds of organic ligands, but also exhibits interesting wave-like infinite chains and 18-MR windows with the diameter of 4.070(7)A × 5.326(9)A. The structure is further stabilized by means of O–H…O hydrogen bonds and π-π stacking interactions. Furthermore, the luminescent properties(including emission spectrum, CIE chromaticity coordinate and decay curve) of 1 were also investigated in the solid-state at room temperature.
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 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Supported by Jilin Province Science and Technology Development projects (No. 201105085)
文摘A new ID coordination polymer, [Cda(L1)2(L2)2].H2O (1, H2L1 = 4-(carboxy- methoxy)benzoic acid and L2 = 2-(4-fluorophenyl)-I H-imidazo[4,5-f][1,10]phenanthroline), has been hydrothermally synthesized and characterized by elemental analysis and single-crystal X-ray diffraction. It crystallizes in triclinic, space group P1 with a = 9.985(5), b = 10.768(5), c = 12.512(5) A, a = 68.959(5), β = 80.354(5), γ = 79.663(5)°, V= 1227.4(10) A3, Z = 1, C56H36Cd2F2N8O11, Mr = 1259.73, Dc = 1.704 g/cm3, F(000) = 630, μ(MoKa) = 0.949 mm-1, R = 0.0261 and wR = 0.0655. The L1 anions link the neighboring Cd(II) atoms to form a 1D double chain structure. The L2 ligands are alternately located on both sides of the double chains. More interestingly, the lateral L2 ligands from adjacent double chains are paired to furnish strong π-π interactions, yielding a 2D supramolecular layer. N-H...O, O-H...N and O-H...O hydrogen bonds further stabilize the structure of 1. The luminescent property of 1 was studied in solid state at room temperature.
基金supported by Basic Research Project of Shanghai Science and Technology Committee (14JC1491000)the Large Instruments Open Foundation of East China Normal University+3 种基金National Natural Science Foundation of China for Excellent Young Scholars (21522303)National Natural Science Foundation of China (21373086)National Key Basic Research Program of China (2013CB921800)National High Technology Research and Development Program of China (2014AA123401)
文摘Nanowire coordination polymer cobalt–terephthalonitrile(Co-BDCN) was successfully synthesized using a simple solvothermal method and applied as anode material for lithium-ion batteries(LIBs). A reversible capacity of 1132 mAh g^(-1) was retained after 100 cycles at a rate of 100 mAg^(-1), which should be one of the best LIBs performances among metal organic frameworks and coordination polymers-based anode materials at such a rate. On the basis of the comprehensive structural and morphology characterizations including fourier transform infrared spectroscopy,~1 H NMR,^(13)C NMR, and scanning electron microscopy, we demonstrated that the great electrochemical performance of the as-synthesized Co-BDCN coordination polymer can be attributed to the synergistic effect of metal centers and organic ligands, as well as the stability of the nanowire morphology during cycling.