A new Cu(Ⅰ) coordination polymer(CP) formulated as [Cu2(L)(CN)2]n(1, L =1,1′-bis(5,6-dimethylbenzimidazole)methane) was synthesized, in which the cyanide anions were generated in situ by the cleavage of C–C bond of...A new Cu(Ⅰ) coordination polymer(CP) formulated as [Cu2(L)(CN)2]n(1, L =1,1′-bis(5,6-dimethylbenzimidazole)methane) was synthesized, in which the cyanide anions were generated in situ by the cleavage of C–C bond of acetonitrile under hydrothermal conditions. CP 1 was characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. It crystallizes in the orthorhombic system, Pccn space group, with a = 10.314(3), b = 20.966(7), c =9.432(3)?, V = 2039.5(11)?3, Z = 4, C21 H20 Cu2 N6, Mr = 483.51, Dc = 1.575 g×cm^-3,μ= 2.105 mm-1 and F(000)= 984, the final R = 0.0608 and wR = 0.1942 for 1226 observed reflections with Ⅰ> 2s(Ⅰ)for the CP 1. The CP 1 possesses a 2D {63} layer structure which is composed of Cu(Ⅰ) centers bridged by L and CN– ligands. The thermal stability and luminescence properties of CP 1 are discussed in detail. The complex also displays a remarkable activity for the degradation of methyl orange by hydrogen peroxide in a Fenton-like process.展开更多
A new copper coordination polymer[Cu2I(C7H5N4)2]n(1)with the 3-(pyridin-2-yl)-1,2,4-triazole(Hpt)and copper iodide was synthesized.It crystallizes in the triclinic space group P1 with a=8.6380(9),b=9.2434(9),c=11.8588...A new copper coordination polymer[Cu2I(C7H5N4)2]n(1)with the 3-(pyridin-2-yl)-1,2,4-triazole(Hpt)and copper iodide was synthesized.It crystallizes in the triclinic space group P1 with a=8.6380(9),b=9.2434(9),c=11.8588(12)A,α=99.5890(10)o,β=109.0990(10)o,γ=105.2800(10)o,V=829.25(15)A^3,Dc=2.180 g/cm3,Z=2,F(000)=522,GOOF=1.046,the final R=0.0245 and wR=0.0598.The crystal structure shows that two copper ions are bridged by twoμ2-η1:η0-3-(pyridin-2-yl)-1,2,4-triazole anions and two iodide ions.The coordination environments of the Cu ion are Cu(1)N5 and Cu(2)N2I2,giving distorted square pyramidal geometry and trigon pyramid geometry.The magnetic and fluorescent properties of 1 were studied.展开更多
Presented here is a new heterometallic Cu(I)-Sr(Ⅱ) coordination polymer, [Cu(3)Sr_2(isonic)_5 Br_2(H_2O)_3]n·n(H_2O)(1, Hisonic = isonicotinic acid), has been synthesized via the hydrothermal reactions of CuBr, ...Presented here is a new heterometallic Cu(I)-Sr(Ⅱ) coordination polymer, [Cu(3)Sr_2(isonic)_5 Br_2(H_2O)_3]n·n(H_2O)(1, Hisonic = isonicotinic acid), has been synthesized via the hydrothermal reactions of CuBr, Sr(NO_3)_2 and isonicotinic acid. The crystal structure is of triclinic system, space group P1 with a = 7.111(2), b = 14.934(4), c = 18.0255(11) ?, α = 83.137(15), β = 87.155(15), γ = 79.75(2)°, V = 1869.4(8) ?~3, C_(30)H_(29)Br_2Cu(3)N_5O_(14)Sr_2, Mr = 1209.27, Z = 2, Dc = 2.148 g/cm^3, F(000) = 1178, μ = 6.725 mm^(-1), R = 0.0500 and wR = 0.1008 for 4688 observed reflections(I > 2s(I)). Single-crystal X-ray diffraction analysis revealed that compound 1 features a 3 D heterometallic framework stabilized by bifunctional isonic ligands. In addition, the luminescent and photocatalytic properties of compound 1 were also investigated at room temperature.展开更多
A new 2-D Bi(3+) coordination polymer {Bi4(μ3-O)2(μ4-O)2(C7H3NO4)2}n(1,C7H3NO4 = pyridine-2,6-dicarboxylate) containing(6,5)-connected topological sheet with the Schl?fli symbol of(4~4·6~3·8...A new 2-D Bi(3+) coordination polymer {Bi4(μ3-O)2(μ4-O)2(C7H3NO4)2}n(1,C7H3NO4 = pyridine-2,6-dicarboxylate) containing(6,5)-connected topological sheet with the Schl?fli symbol of(4~4·6~3·8~4·12~4)(4~5·6~4·8) has been synthesized by an ionothermal method using the ionic liquid 1-ethyl-3-methylimidazolium bromide([Emim]Br) as solvent,and characterized by C,H and N elemental analysis,energy-dispersive X-ray spectroscopy(EDS),infrared spectrum(IR spectrum) and single-crystal X-ray diffraction.The results indicate that 1 belongs to the monoclinic system,space group P21/n with a = 13.766(7),b = 4.142(2),c = 16.439(8) ?,β = 99.099(9)°,Z = 2,V = 925.6(8) ?~3,Dc = 4.414 g·cm^(-3),F(000) = 1064,μ = 37.985 mm-1,the final R = 0.0326,wR = 0.0727 and S = 1.022.The molecular structural units [Bi4(μ3-O)2(μ4-O)2(C7H3NO4)2] are connected to each other via bridging O atoms,extending into an interesting 2-D layered structure.These resulting layers are further assembled by weak C-H…O hydrogen bonds into a 3-D supramolecular architecture.Moreover,its thermal stability and the luminescent properties have been also studied.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
Hydrothermal treatment of MCl2 ( M = Co or Cu ) , NH4 VO3, and 1,10-phenanthroline-5,6-dione (pdon) resulted in the formation of a duplex coordination polymer [ Co ( bpdc ) ( H2O ) 3 ] · H2O ( bpdc = 2,2...Hydrothermal treatment of MCl2 ( M = Co or Cu ) , NH4 VO3, and 1,10-phenanthroline-5,6-dione (pdon) resulted in the formation of a duplex coordination polymer [ Co ( bpdc ) ( H2O ) 3 ] · H2O ( bpdc = 2,2'-bipyridine-3,3'-dicarboxylate) and a chain-like coordination polymer [ Cu (bpy) V2O6 ] ( bpy = 2,2'-bipyridine ). X-ray single-crystal structural analysis shows that under hydrothermal conditions and in the presence of different transition metals, the organic reagent pdon was transformed in situ into bpdc and bpy, respectively. Mechanism of the in situ ligand synthesis reaction has been discussed.展开更多
A new lanthanum complex formulated as {(bpyH2)[La(btc)(H2O)4(NO3)]·2H2O}n (1) (btcH4=benzene-1,2,4,5-tetracarboxylic acid; bpy=4,4'-bipyridine) was hydrothermally synthesized. The complex was charact...A new lanthanum complex formulated as {(bpyH2)[La(btc)(H2O)4(NO3)]·2H2O}n (1) (btcH4=benzene-1,2,4,5-tetracarboxylic acid; bpy=4,4'-bipyridine) was hydrothermally synthesized. The complex was characterized by FT-IR spectroscopy, elemental analysis and X-ray diffraction. X-ray crystal structural analysis revealed that the compound belonged to the monoclinic space group C2/c with cell parameters a= 1.42806(7) nm, b=1.10258(5) nm, c=1.60333(8) nm and β=101.9400(10)°. The complex was polymeric with La^III atoms linked by four O atoms from two carboxylate groups of one benzene-1,2,4,5-tetracarboxylate. The LaIn atom was ten coordinated in a distorted tetracapped trigonal prism. In the crystal structure, a wide range of noncovalent interactions consisting of hydrogen bonding (of the types of O-H…O, N-H…O and C-H…O) and ion pairing interactions connected the various components into a supramolecular structure.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
A new Co(Ⅱ) coordination polymer, [Co(1,4-chdc)(L)(H2O)]n(1), was synthesized under hydrothermal condition(1,4-H2chdc = 1,4-cyclohexanedicarboxylic acid, L = 2-(4-fluoro-phenyl)-1 H-imidazo[4,5-f][1,10]phenanthroline...A new Co(Ⅱ) coordination polymer, [Co(1,4-chdc)(L)(H2O)]n(1), was synthesized under hydrothermal condition(1,4-H2chdc = 1,4-cyclohexanedicarboxylic acid, L = 2-(4-fluoro-phenyl)-1 H-imidazo[4,5-f][1,10]phenanthroline). Its crystal structure was determined by single-crystal X-ray diffraction. 1 crystallizes in triclinic, space group P1 with a = 8.790(5), b = 10.486(5), c = 13.305(5)A, α = 87.391(5), β = 82.925(5), γ = 81.841(5)°, V = 1204.2(10)A^3, Z = 2, C27H23FN4O5Co, Mr = 561.42, Dc = 1.548 g/cm^3, F(000) = 578, μ(Mo Ka) = 0.769 mm^-1, R = 0.0415 and wR = 0.1043. In 1, each 1,4-chdc anion bridges two neighboring Co(Ⅱ) atoms to give a chain structure. The L ligands are attached on one side of the chain through chelating the Co(Ⅱ) atoms, and are stacked with those of an adjacent chain through π-π interactions, yielding a double-chain structure. The double-chain structures are linked into a supramolecular layer structure through N–H…O hydrogen-bonding interactions between the adjacent double-chain structures. Moreover, the thermal behavior of 1 was also studied.展开更多
A two-dimensional(2D) 44 topological ZnⅡ coordination polymer {[Zn2Cl2(L)(4bpy)2]}∞(H2L = anthracene-9,10-dicarboxylic acid, 4bpy = 4,4ˊ-bipyridine) based on binuclear [Zn2Cl2] nodes has been synthesized an...A two-dimensional(2D) 44 topological ZnⅡ coordination polymer {[Zn2Cl2(L)(4bpy)2]}∞(H2L = anthracene-9,10-dicarboxylic acid, 4bpy = 4,4ˊ-bipyridine) based on binuclear [Zn2Cl2] nodes has been synthesized and characterized by IR, elemental analysis, X-ray powder diffraction and single-crystal X-ray diffraction analysis. Moreover, the luminescent properties of the correspon- ding compound have been briefly investigated.展开更多
A new cobalt(Ⅱ) coordination polymer with the formula of [Co(iqnc)2]n(1, iqnc = l-isoquinolinecarboxylate) has been synthesized through hydrothermal synthesis and structurally characterized by single-crystal X-...A new cobalt(Ⅱ) coordination polymer with the formula of [Co(iqnc)2]n(1, iqnc = l-isoquinolinecarboxylate) has been synthesized through hydrothermal synthesis and structurally characterized by single-crystal X-ray diffraction method. The title coordination polymer represents a two-dimensional layer structure featuring adjacent one-dimensional [Co(iqnc)2]n chains connected with each other by uncoordinated oxygen atoms of carboxylate. Crystal data: monoclinic, space group P21/c, a = 15.4302(2), b = 5.6743(7), c = 9.2307(1) A, β = 98.459(2)o, V = 799.41(2) A3, Z = 2, S = 1.019, the final R = 0.0346, w R = 0.0876(I 2σ(I)) and R = 0.0477 and wR = 0.1159 for all reflections. In addition, elemental analysis, IR, and magnetism properties are presented.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 metal-organic coordination polymer [Zn(hfipbb)(e-urea)]n(1,H2hfipbb = 4,4'-(hexafluoroisopropylidene)bis(benzoic acid),e-urea = ethylene urea) has been urothermally synthesized and characterized by el...A new metal-organic coordination polymer [Zn(hfipbb)(e-urea)]n(1,H2hfipbb = 4,4'-(hexafluoroisopropylidene)bis(benzoic acid),e-urea = ethylene urea) has been urothermally synthesized and characterized by elemental analysis and single-crystal X-ray diffraction.The title complex crystallizes in monoclinic,space group P21/c with a = 13.302(4),b = 10.981(3),c = 13.804(4) ,β = 93.587(5)°,V = 2012.3(10) 3,C20H14N2O5F6Zn,Mr = 541.72,Z = 4,Dc = 0.447 g/cm3, = 0.328 mm-1,F(000) = 272,R = 0.0340 and wR = 0.1107 for 4528 observed reflections(I 〉2σ(I)).In the structure of compound 1,two Zn(Ⅱ) ions are bridged by two carboxylate groups from two hfipbb ligands to form a dinuclear unit,and each dinuclear Zn(Ⅱ) unit is linked with its two adjacent dinuclear units through four hfipbb ligands into an infinite one-dimensional double-chain.The interesting structural feature of compound 1 is that the one-D double-chains are self-interconnected into a three-D supramolecular structure through hydrogen bonds between the coordinated e-urea molecules and carboxylate oxygen atoms(N1 and O2,N2 and O4).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
A new 3d-4fheterometallic polymer {[Sm2Cu(PDC)2(SO4)2(H20)6]·2H2O}n 1 has been synthesized by Sm2O3, Cu(SO4)2·5H2O and pyridine-3,5-dicarboxylic acid under hydrothermal conditions. The compound cryst...A new 3d-4fheterometallic polymer {[Sm2Cu(PDC)2(SO4)2(H20)6]·2H2O}n 1 has been synthesized by Sm2O3, Cu(SO4)2·5H2O and pyridine-3,5-dicarboxylic acid under hydrothermal conditions. The compound crystallizes in triclinic system, space group Pi, with a = 6.352(7), b = 10.040(10), c = 10.315(11) A, α = 94.958(14), β = 95.556(7), γ = 99.747(14)°, V = 641.7(12)A3, Z = 1, M, = 1030.63, Dc= 2.651 Mg/m3,μ = 5.615 mm-1, F(000) = 491, the final R = 0.0491 and wR = 0.1345 for 2098 observed reflections with I 〉 2σ(I). The compound is a three-dimensional network structure in which infinite lanthanide-carboxylate chains are linked by [Cu($04)2]2- metalloligands to form a mixed-metal coordination network.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
A novel manganese coordination polymer [Mn2(sfdb)2(biyb)2(H2O)2]n (1, H2sfdb = 4,4′-sulfonyldibenzoic acid, biyb = 1,4-bis(imidazol-1-ylmethyl)benze) has been hydrothermally synthesized and structurally cha...A novel manganese coordination polymer [Mn2(sfdb)2(biyb)2(H2O)2]n (1, H2sfdb = 4,4′-sulfonyldibenzoic acid, biyb = 1,4-bis(imidazol-1-ylmethyl)benze) has been hydrothermally synthesized and structurally characterized by single-crystal X-ray determination, IR and thermogravimetric analysis (TGA). Complex 1 crystallizes in the triclinic system, space group Pi with a = 10.138(4), b = 11.187(5), c = 13.582(6) A, α = 69.146(7), β = 89.628(7), γ = 77.076(7)°, MnzC56H48N8O14S2, Mr= 1231.02, V= 1398.5(10) A3, Dc= 1.462 g/cm3, F(000) = 634,μ = 0.600 mm-1, S = 1.088 and Z = 1. The final refinement gave R = 0.0570 and wR = 0.1229 for 4889 observed reflections with 1 〉 2σ(I). Interestingly, in complex 1, the sfdb2 and biyb ligands connect the Mn(Ⅱ) ions into two-dimensional 2-fold interpenetrating layers, and such layers are further connected with each other to generate a 3D supramolecular structure through hydrogen bonding interaction.展开更多
A new Na(I) coordination polymer,[Na2(Hpimdc)(H2 pimdc)(phen)2]n(1), has been synthesized by the reaction of NaOH with 2-propyl-4,5-imidazoledicarboxylic acid(H3 pimdc)and 1,10-phenanthroline(phen). The Na(I) coordina...A new Na(I) coordination polymer,[Na2(Hpimdc)(H2 pimdc)(phen)2]n(1), has been synthesized by the reaction of NaOH with 2-propyl-4,5-imidazoledicarboxylic acid(H3 pimdc)and 1,10-phenanthroline(phen). The Na(I) coordination polymer 1 was characterized by single-crystal X-ray diffraction analysis and elemental analysis. In 1, the bridged ligand H3 pimdc adopts two modes(singly deprotonated and doubly deprotonated) to coordinate with the Na(I) ion.The Na(1) ion is six-coordinated with three N atoms from a phen ligand and a H2 pimdc ligand,three O atoms from a Hpimdc ligand and two other different H2 pimdc ligands. The Na(2) ion is also six-coordinated with three N atoms from a phen ligand and a Hpimdc ligand, three O atoms from a H2 pimdc ligand and other two different Hpimdc ligands. Complex 1 exhibits a 1 D chain structure built up by μ-H2 pimdc-and μ-Hpimdc2-ligands. The antitumor activities of complex 1 against human SGC7901, A549 and H08910 cells have been tested.展开更多
A three-dimensional coordination polymer {[Dy(H2btec)2/4(btec)3/6(H2O)]·2H2O} n has been synthesized through the reaction of DyCl3·6H2O and 1,2,4,5-benzenetetracarboxylic acid by solvothermal technique...A three-dimensional coordination polymer {[Dy(H2btec)2/4(btec)3/6(H2O)]·2H2O} n has been synthesized through the reaction of DyCl3·6H2O and 1,2,4,5-benzenetetracarboxylic acid by solvothermal technique, and the crystal structure was determined by X-ray diffraction. The Dy(Ⅲ) coordination polymer crystallizes in monoclinic, space group P21/n with a=10.7063(1), b=7.1491(1), c=17.1197(3), α=90, β=97.10, γ=90°, V=1300.31(3)3 , C10H9DyO11 , Dc=2.389g/cm3 , Z=4, F(000)=892, the final R=0.0165 and wR=0.0448 for I 〉 2σ(I). The title coordination polymer possesses a three-dimensional framework consisting of nine-coordinate Dy(Ⅲ) centers and two kinds of coordination modes for the 1,2,4,5-benzenetetracarboxylic acid ligands. Every btec4- ligand (deprotonated four protons from 1,2,4,5-benzenetetracarboxylic acid) in the title coordination polymer can clamp three Dy atoms like forceps, which could make the Dy atoms closer in the area of metal-metal interaction. The 3-D framework of the coordination polymer has many channels occupied by the free guest water molecules, and the hydrogen bonds between the coordinated carboxylic groups and guest water molecules could stabilize the crystal structure of the title coordination polymer. In addition, the luminescence properties were also studied.展开更多
The title compound {[Mn(H2BPTC)(tpy)(H2O)]·(H2O)3}, (1, H4BPTC = 1,1'- biphenyl-2,2',6,6'-tetracarboxylic acid, tby = 2,2':6,2'-terpyridine) has been synthesized by the hydrothermal reaction, and ...The title compound {[Mn(H2BPTC)(tpy)(H2O)]·(H2O)3}, (1, H4BPTC = 1,1'- biphenyl-2,2',6,6'-tetracarboxylic acid, tby = 2,2':6,2'-terpyridine) has been synthesized by the hydrothermal reaction, and its structure was determined by X-ray diffraction and characterized by elemental analysis, IR spectrum and thermogravimetric analysis. The crystal is of monoclinic, space group P21/c with a = 10.971(2), b = 20.776(4), c = 14.332(3) A, β = 109.25(3)°, MnC31H27N3O12, Mr = 688.50, V= 3084.1(10) A^3, Dc = 1.483 g/cm^3, F(000) = 1420, p = 0.498 mm^-1, S = 1.066 and Z = 4. The final refinement gave R = 0.0447 and wR = 0.1103 for 5107 observed reflections with I 〉 2σ(I). The title complex has a {[Mn(H2BPTC)(tpy)(H2O)]}, chain structure, and the hydrogen bonding interactions make it more stable. Each chain is further connected to the adjacent ones through π…π, C-H…π and rich hydrogen bonds to form a metal-organic coordination polymer.展开更多
基金Supported by the National Natural Science Foundation of China(No.51474086)
文摘A new Cu(Ⅰ) coordination polymer(CP) formulated as [Cu2(L)(CN)2]n(1, L =1,1′-bis(5,6-dimethylbenzimidazole)methane) was synthesized, in which the cyanide anions were generated in situ by the cleavage of C–C bond of acetonitrile under hydrothermal conditions. CP 1 was characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. It crystallizes in the orthorhombic system, Pccn space group, with a = 10.314(3), b = 20.966(7), c =9.432(3)?, V = 2039.5(11)?3, Z = 4, C21 H20 Cu2 N6, Mr = 483.51, Dc = 1.575 g×cm^-3,μ= 2.105 mm-1 and F(000)= 984, the final R = 0.0608 and wR = 0.1942 for 1226 observed reflections with Ⅰ> 2s(Ⅰ)for the CP 1. The CP 1 possesses a 2D {63} layer structure which is composed of Cu(Ⅰ) centers bridged by L and CN– ligands. The thermal stability and luminescence properties of CP 1 are discussed in detail. The complex also displays a remarkable activity for the degradation of methyl orange by hydrogen peroxide in a Fenton-like process.
基金Supported by the Natural Science Foundation of Hunan Province(2019JJ60021)the Scientific Research Found of Hunan Provincial Education Department of China(17A049)Industry and Research Key Project of Hengyang City(2018k KJ016,2017KJ155,2017KJ193)
文摘A new copper coordination polymer[Cu2I(C7H5N4)2]n(1)with the 3-(pyridin-2-yl)-1,2,4-triazole(Hpt)and copper iodide was synthesized.It crystallizes in the triclinic space group P1 with a=8.6380(9),b=9.2434(9),c=11.8588(12)A,α=99.5890(10)o,β=109.0990(10)o,γ=105.2800(10)o,V=829.25(15)A^3,Dc=2.180 g/cm3,Z=2,F(000)=522,GOOF=1.046,the final R=0.0245 and wR=0.0598.The crystal structure shows that two copper ions are bridged by twoμ2-η1:η0-3-(pyridin-2-yl)-1,2,4-triazole anions and two iodide ions.The coordination environments of the Cu ion are Cu(1)N5 and Cu(2)N2I2,giving distorted square pyramidal geometry and trigon pyramid geometry.The magnetic and fluorescent properties of 1 were studied.
基金Supported by the grants from Guangdong University of Petrochemical Technology
文摘Presented here is a new heterometallic Cu(I)-Sr(Ⅱ) coordination polymer, [Cu(3)Sr_2(isonic)_5 Br_2(H_2O)_3]n·n(H_2O)(1, Hisonic = isonicotinic acid), has been synthesized via the hydrothermal reactions of CuBr, Sr(NO_3)_2 and isonicotinic acid. The crystal structure is of triclinic system, space group P1 with a = 7.111(2), b = 14.934(4), c = 18.0255(11) ?, α = 83.137(15), β = 87.155(15), γ = 79.75(2)°, V = 1869.4(8) ?~3, C_(30)H_(29)Br_2Cu(3)N_5O_(14)Sr_2, Mr = 1209.27, Z = 2, Dc = 2.148 g/cm^3, F(000) = 1178, μ = 6.725 mm^(-1), R = 0.0500 and wR = 0.1008 for 4688 observed reflections(I > 2s(I)). Single-crystal X-ray diffraction analysis revealed that compound 1 features a 3 D heterometallic framework stabilized by bifunctional isonic ligands. In addition, the luminescent and photocatalytic properties of compound 1 were also investigated at room temperature.
基金Project supported by the National Natural Science Foundation of China(No.21601095)
文摘A new 2-D Bi(3+) coordination polymer {Bi4(μ3-O)2(μ4-O)2(C7H3NO4)2}n(1,C7H3NO4 = pyridine-2,6-dicarboxylate) containing(6,5)-connected topological sheet with the Schl?fli symbol of(4~4·6~3·8~4·12~4)(4~5·6~4·8) has been synthesized by an ionothermal method using the ionic liquid 1-ethyl-3-methylimidazolium bromide([Emim]Br) as solvent,and characterized by C,H and N elemental analysis,energy-dispersive X-ray spectroscopy(EDS),infrared spectrum(IR spectrum) and single-crystal X-ray diffraction.The results indicate that 1 belongs to the monoclinic system,space group P21/n with a = 13.766(7),b = 4.142(2),c = 16.439(8) ?,β = 99.099(9)°,Z = 2,V = 925.6(8) ?~3,Dc = 4.414 g·cm^(-3),F(000) = 1064,μ = 37.985 mm-1,the final R = 0.0326,wR = 0.0727 and S = 1.022.The molecular structural units [Bi4(μ3-O)2(μ4-O)2(C7H3NO4)2] are connected to each other via bridging O atoms,extending into an interesting 2-D layered structure.These resulting layers are further assembled by weak C-H…O hydrogen bonds into a 3-D supramolecular architecture.Moreover,its thermal stability and the luminescent properties have been also studied.
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 Natural Science Foundation of Liaoning Province(No20061073)Education Committee Foundation of Liao-ning Province(No2004F023)
文摘Hydrothermal treatment of MCl2 ( M = Co or Cu ) , NH4 VO3, and 1,10-phenanthroline-5,6-dione (pdon) resulted in the formation of a duplex coordination polymer [ Co ( bpdc ) ( H2O ) 3 ] · H2O ( bpdc = 2,2'-bipyridine-3,3'-dicarboxylate) and a chain-like coordination polymer [ Cu (bpy) V2O6 ] ( bpy = 2,2'-bipyridine ). X-ray single-crystal structural analysis shows that under hydrothermal conditions and in the presence of different transition metals, the organic reagent pdon was transformed in situ into bpdc and bpy, respectively. Mechanism of the in situ ligand synthesis reaction has been discussed.
文摘A new lanthanum complex formulated as {(bpyH2)[La(btc)(H2O)4(NO3)]·2H2O}n (1) (btcH4=benzene-1,2,4,5-tetracarboxylic acid; bpy=4,4'-bipyridine) was hydrothermally synthesized. The complex was characterized by FT-IR spectroscopy, elemental analysis and X-ray diffraction. X-ray crystal structural analysis revealed that the compound belonged to the monoclinic space group C2/c with cell parameters a= 1.42806(7) nm, b=1.10258(5) nm, c=1.60333(8) nm and β=101.9400(10)°. The complex was polymeric with La^III atoms linked by four O atoms from two carboxylate groups of one benzene-1,2,4,5-tetracarboxylate. The LaIn atom was ten coordinated in a distorted tetracapped trigonal prism. In the crystal structure, a wide range of noncovalent interactions consisting of hydrogen bonding (of the types of O-H…O, N-H…O and C-H…O) and ion pairing interactions connected the various components into a supramolecular structure.
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 the National Natural Science Foundation of China(No.21607051)
文摘A new Co(Ⅱ) coordination polymer, [Co(1,4-chdc)(L)(H2O)]n(1), was synthesized under hydrothermal condition(1,4-H2chdc = 1,4-cyclohexanedicarboxylic acid, L = 2-(4-fluoro-phenyl)-1 H-imidazo[4,5-f][1,10]phenanthroline). Its crystal structure was determined by single-crystal X-ray diffraction. 1 crystallizes in triclinic, space group P1 with a = 8.790(5), b = 10.486(5), c = 13.305(5)A, α = 87.391(5), β = 82.925(5), γ = 81.841(5)°, V = 1204.2(10)A^3, Z = 2, C27H23FN4O5Co, Mr = 561.42, Dc = 1.548 g/cm^3, F(000) = 578, μ(Mo Ka) = 0.769 mm^-1, R = 0.0415 and wR = 0.1043. In 1, each 1,4-chdc anion bridges two neighboring Co(Ⅱ) atoms to give a chain structure. The L ligands are attached on one side of the chain through chelating the Co(Ⅱ) atoms, and are stacked with those of an adjacent chain through π-π interactions, yielding a double-chain structure. The double-chain structures are linked into a supramolecular layer structure through N–H…O hydrogen-bonding interactions between the adjacent double-chain structures. Moreover, the thermal behavior of 1 was also studied.
基金Supported by the key project of Science,the Technology Department of Henan province(No.112102210371)the science and technology research projects of Education Department of Henan province(No.12B150003)
文摘A two-dimensional(2D) 44 topological ZnⅡ coordination polymer {[Zn2Cl2(L)(4bpy)2]}∞(H2L = anthracene-9,10-dicarboxylic acid, 4bpy = 4,4ˊ-bipyridine) based on binuclear [Zn2Cl2] nodes has been synthesized and characterized by IR, elemental analysis, X-ray powder diffraction and single-crystal X-ray diffraction analysis. Moreover, the luminescent properties of the correspon- ding compound have been briefly investigated.
基金Supported by the National Natural Science Foundation of China(No.21203160)Education Department Foundation of Shaanxi Province(No.12JK0631)+1 种基金Natural Science Foundation of Shaanxi Province(No.2013JM2013)Special Research Fund of Xianyang Normal University(No.11XSYK204,11XSYK205,12XSYK023)
文摘A new cobalt(Ⅱ) coordination polymer with the formula of [Co(iqnc)2]n(1, iqnc = l-isoquinolinecarboxylate) has been synthesized through hydrothermal synthesis and structurally characterized by single-crystal X-ray diffraction method. The title coordination polymer represents a two-dimensional layer structure featuring adjacent one-dimensional [Co(iqnc)2]n chains connected with each other by uncoordinated oxygen atoms of carboxylate. Crystal data: monoclinic, space group P21/c, a = 15.4302(2), b = 5.6743(7), c = 9.2307(1) A, β = 98.459(2)o, V = 799.41(2) A3, Z = 2, S = 1.019, the final R = 0.0346, w R = 0.0876(I 2σ(I)) and R = 0.0477 and wR = 0.1159 for all reflections. In addition, elemental analysis, IR, and magnetism properties are presented.
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 Natural Science Foundation of Fujian Province (No.2010J01029)the Foundation of Education Committee of Fujian Province (No.JB11002)
文摘A new metal-organic coordination polymer [Zn(hfipbb)(e-urea)]n(1,H2hfipbb = 4,4'-(hexafluoroisopropylidene)bis(benzoic acid),e-urea = ethylene urea) has been urothermally synthesized and characterized by elemental analysis and single-crystal X-ray diffraction.The title complex crystallizes in monoclinic,space group P21/c with a = 13.302(4),b = 10.981(3),c = 13.804(4) ,β = 93.587(5)°,V = 2012.3(10) 3,C20H14N2O5F6Zn,Mr = 541.72,Z = 4,Dc = 0.447 g/cm3, = 0.328 mm-1,F(000) = 272,R = 0.0340 and wR = 0.1107 for 4528 observed reflections(I 〉2σ(I)).In the structure of compound 1,two Zn(Ⅱ) ions are bridged by two carboxylate groups from two hfipbb ligands to form a dinuclear unit,and each dinuclear Zn(Ⅱ) unit is linked with its two adjacent dinuclear units through four hfipbb ligands into an infinite one-dimensional double-chain.The interesting structural feature of compound 1 is that the one-D double-chains are self-interconnected into a three-D supramolecular structure through hydrogen bonds between the coordinated e-urea molecules and carboxylate oxygen atoms(N1 and O2,N2 and O4).
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 the Youth Foundation of Luoyang Normal University(No.10000875)the Foundation of Education Department of Henan Province(No.2011A150021)
文摘A new 3d-4fheterometallic polymer {[Sm2Cu(PDC)2(SO4)2(H20)6]·2H2O}n 1 has been synthesized by Sm2O3, Cu(SO4)2·5H2O and pyridine-3,5-dicarboxylic acid under hydrothermal conditions. The compound crystallizes in triclinic system, space group Pi, with a = 6.352(7), b = 10.040(10), c = 10.315(11) A, α = 94.958(14), β = 95.556(7), γ = 99.747(14)°, V = 641.7(12)A3, Z = 1, M, = 1030.63, Dc= 2.651 Mg/m3,μ = 5.615 mm-1, F(000) = 491, the final R = 0.0491 and wR = 0.1345 for 2098 observed reflections with I 〉 2σ(I). The compound is a three-dimensional network structure in which infinite lanthanide-carboxylate chains are linked by [Cu($04)2]2- metalloligands to form a mixed-metal coordination network.
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.
基金Supported by the National Natural Science Foundation of China (No. 21101133)the Natural Scientific Research Foundation of Shaanxi Provincial Education Office of China (No. 11JK0565)
文摘A novel manganese coordination polymer [Mn2(sfdb)2(biyb)2(H2O)2]n (1, H2sfdb = 4,4′-sulfonyldibenzoic acid, biyb = 1,4-bis(imidazol-1-ylmethyl)benze) has been hydrothermally synthesized and structurally characterized by single-crystal X-ray determination, IR and thermogravimetric analysis (TGA). Complex 1 crystallizes in the triclinic system, space group Pi with a = 10.138(4), b = 11.187(5), c = 13.582(6) A, α = 69.146(7), β = 89.628(7), γ = 77.076(7)°, MnzC56H48N8O14S2, Mr= 1231.02, V= 1398.5(10) A3, Dc= 1.462 g/cm3, F(000) = 634,μ = 0.600 mm-1, S = 1.088 and Z = 1. The final refinement gave R = 0.0570 and wR = 0.1229 for 4889 observed reflections with 1 〉 2σ(I). Interestingly, in complex 1, the sfdb2 and biyb ligands connect the Mn(Ⅱ) ions into two-dimensional 2-fold interpenetrating layers, and such layers are further connected with each other to generate a 3D supramolecular structure through hydrogen bonding interaction.
基金supported by the National Natural Science Foundation of China(No.21171132)the Project of Shandong Province Higher Educational Science and Technology Program(J14LC01)Science Foundation of Weifang
文摘A new Na(I) coordination polymer,[Na2(Hpimdc)(H2 pimdc)(phen)2]n(1), has been synthesized by the reaction of NaOH with 2-propyl-4,5-imidazoledicarboxylic acid(H3 pimdc)and 1,10-phenanthroline(phen). The Na(I) coordination polymer 1 was characterized by single-crystal X-ray diffraction analysis and elemental analysis. In 1, the bridged ligand H3 pimdc adopts two modes(singly deprotonated and doubly deprotonated) to coordinate with the Na(I) ion.The Na(1) ion is six-coordinated with three N atoms from a phen ligand and a H2 pimdc ligand,three O atoms from a Hpimdc ligand and two other different H2 pimdc ligands. The Na(2) ion is also six-coordinated with three N atoms from a phen ligand and a Hpimdc ligand, three O atoms from a H2 pimdc ligand and other two different Hpimdc ligands. Complex 1 exhibits a 1 D chain structure built up by μ-H2 pimdc-and μ-Hpimdc2-ligands. The antitumor activities of complex 1 against human SGC7901, A549 and H08910 cells have been tested.
基金supported by the National Natural Science Foundation of China (No.21062011)
文摘A three-dimensional coordination polymer {[Dy(H2btec)2/4(btec)3/6(H2O)]·2H2O} n has been synthesized through the reaction of DyCl3·6H2O and 1,2,4,5-benzenetetracarboxylic acid by solvothermal technique, and the crystal structure was determined by X-ray diffraction. The Dy(Ⅲ) coordination polymer crystallizes in monoclinic, space group P21/n with a=10.7063(1), b=7.1491(1), c=17.1197(3), α=90, β=97.10, γ=90°, V=1300.31(3)3 , C10H9DyO11 , Dc=2.389g/cm3 , Z=4, F(000)=892, the final R=0.0165 and wR=0.0448 for I 〉 2σ(I). The title coordination polymer possesses a three-dimensional framework consisting of nine-coordinate Dy(Ⅲ) centers and two kinds of coordination modes for the 1,2,4,5-benzenetetracarboxylic acid ligands. Every btec4- ligand (deprotonated four protons from 1,2,4,5-benzenetetracarboxylic acid) in the title coordination polymer can clamp three Dy atoms like forceps, which could make the Dy atoms closer in the area of metal-metal interaction. The 3-D framework of the coordination polymer has many channels occupied by the free guest water molecules, and the hydrogen bonds between the coordinated carboxylic groups and guest water molecules could stabilize the crystal structure of the title coordination polymer. In addition, the luminescence properties were also studied.
基金supported by the Natural Science Foundation of Henan Province (No. 2010A140009) the International Technology Cooperation Project of Science and Technology Department of Henan Province (No. 104300510044)
文摘The title compound {[Mn(H2BPTC)(tpy)(H2O)]·(H2O)3}, (1, H4BPTC = 1,1'- biphenyl-2,2',6,6'-tetracarboxylic acid, tby = 2,2':6,2'-terpyridine) has been synthesized by the hydrothermal reaction, and its structure was determined by X-ray diffraction and characterized by elemental analysis, IR spectrum and thermogravimetric analysis. The crystal is of monoclinic, space group P21/c with a = 10.971(2), b = 20.776(4), c = 14.332(3) A, β = 109.25(3)°, MnC31H27N3O12, Mr = 688.50, V= 3084.1(10) A^3, Dc = 1.483 g/cm^3, F(000) = 1420, p = 0.498 mm^-1, S = 1.066 and Z = 4. The final refinement gave R = 0.0447 and wR = 0.1103 for 5107 observed reflections with I 〉 2σ(I). The title complex has a {[Mn(H2BPTC)(tpy)(H2O)]}, chain structure, and the hydrogen bonding interactions make it more stable. Each chain is further connected to the adjacent ones through π…π, C-H…π and rich hydrogen bonds to form a metal-organic coordination polymer.