A new complex, [Zn2（HL）2（2,5-OH-pbda）]n（1, L = 1-（1 H-imidazol-4-yl）-4-（4 Htetrazol-5-yl）benzene（H2L） and 2,5-OH-H2 pbda = 2,5-dihydroxy-terephthalic acid）, has been hydrothermally prepared and characterized by single-crystal X-ray diffraction, IR spectroscopy, elemental analysis and PXRD. Complex 1 crystallizes in monoclinic, space group P21/n with a = 8.8101（10）, b = 17.105（2）, c = 9.4014（11）A, β = 105.704（2）o, V = 1363.9（3） A3, Z = 4, C（14）H9N6O3Zn, Mr = 374.64, Dc = 1.824 g/cm3, μ = 1.831 mm^（-1）, S = 1.042, F（000） = 756, the final R = 0.0309 and w R = 0.1003 for 3130 observed reflections（I 2σ（I））. The H2L ligand was deprotonated to be an HL-anion, and coordinated with Zn^（2＋） to form two-dimensional（2D） Zn2（HL^-）2^（2＋） sheets, which were pillared by the 2,5-OH-pbda2-ligands to form a three-dimensional（3D） dmc net with Point（Schlafli） symbol of（4·82）（4·85）. The large vacancy of the dmc net is filled via mutual interpenetration of another independent framework, leading to the formation of a 2-fold interpenetrating architecture. Solid state luminescent property of 1 has been investigated.
A new coordination polymer [Cd2（5-IPA）（HL）2（H20）2]＇4H20 （1） was prepared under hydrothermal conditions based on 5-hydroxy-isophthalic acid （5-H2IPA） with multi-N-donor ligand 1-（1H-imidazol-4-yl）-3-（4H-tetrazol-5-yl）benzene （H2L）. The complex was characterized by IR spectroscopy, TGA, X-ray powder and single-crystal diffraction. It crystallizes in the monoclinic system, space group C2/e with a = 23.6291（18）, b = 9.9847（8）, c = 17.7244（14） A, fl = 124.6180（10）°, V = 3441.4（5） A3, Z = 4, C28H30N12O11Cd2, Mr = 935.44, Dc = 1.805 g/cm^3,μ= 1.313 mm^-1, S = 1.055, F（000） = 1864, the final R = 0.049 and wR = 0.1315 for 2985 observed reflections （I 〉 2σ（I））. The central metal Cd（II） atoms with octahedral coordination geometry are six-coordinated by three oxygen and three nitrogen atoms. The HL- ligands from the deprotonated HzL connect Cd（II） atoms to form two-dimensional （2D） double-layer fes networks which are further pillared by 5-IPA2- ligands into a rare binodal （3, 4）-connected three-dimensional （3D） architecture with a （4·6·8）（4·62·83） fse-3,4-C2/c topology. Solid state luminescent property and sorption property of 1 have been investigated.
Two new complexes, [Mn（L）（mmbda）（H_2O）]（1） and [Co（L）（btc）（H_2O）]·H_2O（2）, were synthesized by reacting the corresponding metal（Ⅱ） salts with rigid ligand 1,4-di（1Himidazol-4-yl）benzene（L） and two different carboxylic acids of 5-methylisophthalic acid（H_2mmbda） and 1,2,4-benzenetricarboxylic acid（H_3btc）, respectively. The structures of the complexes were characterized by single-crystal X-ray diffraction, IR spectroscopy, elemental analysis and PXRD. Complex 1 crystallizes in triclinic, space group P1 with a = 6.9436（4）, b = 9.7306（6）, c = 15.5302（10） ？, α = 73.7430（10）, β = 85.1010（10）, γ = 70.0360（10）o, V = 946.75（10） ？~3, Z = 2, C_（21）H_（20）N_4O_5 Mn, M_r = 463.33, D_c = 1.618 g/cm^3, μ = 0.742-1, S = 1.002, F（000） = 474, the final R = 0.0285 and wR = 0.0600 for 4328 observed reflections（I 〉 2σ（I））. Complex 2 crystallizes in monoclinic, space group P2_1/n with a = 12.5216（12）, b = 7.3312（8）, c = 22.510（2） ？, β = 93.104（2）o, V = 2063.3（4） ？~3, Z = 4, C_（21）H_（18）N_4O_8Co, M_r = 513.31, D_c = 1.646 g/cm^3, μ = 0.892^（-1） mm, S = 1.096, F（000） = 1044, the final R = 0.0673 and wR = 0.1780 for 3594 observed reflections（I 〉 2σ（I））. Both of complexes are one-dimensional（1D） chain structures and rich hydrogen bonds extend such 1D chains to form three-dimensional（3D） supramolecular polymers.
A new complex, [Zn（L）2]（1）, has been hydrothermally prepared by the reaction of ZnSO4·7H2O with 2-（1H-imidazol-4-yl）benzoic acid（HL） incorporating 4-imidazolyl and carboxylate functional groups, and characterized by single-crystal X-ray diffraction, elemental analysis, IR spectroscopy and powder X-ray diffraction（PXRD）. Complex 1 crystallizes in monoclinic, space group C2/c with a = 9.8349（9）, b = 7.4947（7）, c = 24.104（2） A, β = 92.889（2）o, V = 1774.4（3）A3, Z = 4, C（20）H（14）N4O4 Zn, Mr = 439.72, Dc = 1.646 g/cm3, μ = 1.422 mm-1, S = 1.003, F（000） = 896, the final R = 0.0395 and wR = 0.0874 for 11386 observed reflections（I 〉 2σ（I））. Single-crystal X-ray structural analysis reveals that complex 1 features a two-dimensional（2D） framework with 6~3-hcb topology. Moreover, the photoluminescent property of 1 was also discussed.
A new complex, [Cu（HL）（phen）（H2O）]·4H2O（1, H3L·HCl = 5-（（4-carboxypiperidin-1-yl）methyl）isophthalic acid hydrochloride, phen = 1,10-phenanthroline）, has been hydrothermally prepared and characterized by single-crystal X-ray diffraction, IR spectroscopy, elemental analysis and PXRD. Complex 1 crystallizes in monoclinic, space group P21/c with a = 14.5520（14）, b = 12.6659（12）, c = 15.5006（14） A, β = 97.224（2）o, V = 2834.3（5） A3, Z = 4, C27H33N3O11 Cu, Mr = 639.10, Dc = 1.498 g/cm3, μ = 0.837 mm-1, S = 1.047, F（000） = 1332, the final R = 0.0423 and w R = 0.1118 for 18772 observed reflections（I 〉 2σ（I））. The compound is a Cu（Ⅱ） centre mononuclear molecule in the asymmetric unit. The independent binuclear [Cu2（HL）2（phen）2] units are bridged to form a three-dimensional（3D） supramolecular polymer by extensive hydrogen bonds and π-π non-covalent bonding interactions. Moreover, thermogravimetric（TG） analysis and gas adsorption property of 1 were also discussed.
A new complex,[Cd（L）2（pbda）]n（1,L = 3-（2-pyridyl）-4-（p-methoxyphenyl）-5-（2-thienyl）-1,2,4-triazole,H2pbda = 1,4-benzenedicarboxylic acid）,has been hydrothermally prepared and characterized by single-crystal X-ray diffraction,IR spectroscopy,elemental analysis and PXRD.The complex crystallizes in monoclinic,space group P21/c with a = 8.2929（9）,b = 21.668（2）,c = 10.9940（11） ,β = 90.242（2）o,V = 1975.5（4） 3,Z = 2,C44H32N8O6S2Cd,Mr = 945.30,Dc = 1.589 g/cm3,μ = 0.721 mm-1,S = 1.097,F（000） = 960,the final R = 0.0590 and wR = 0.1045 for 3846 observed reflections（I 2σ（I））.In the title complex,the rigid bridging pbda2-ligands utilize oxygen atoms of carboxylate groups to coordinate with Cd（II） atoms to form one-dimensional chains which are further interlinked into a three-dimension framework via the intermolecular weak interactions.Photoluminescence study revealed that complex 1 exhibits strong fluorescent emission band in the solid state at room temperature.
A new complex, [Ni3（L）2（BTA）2]·2H2O （1, L = 1,4-di（1H-imidazol-4-yl）benzene, H3BTA = benzene-1,3,5-triacetic acid）, has been hydrothermally prepared and characterized by single-crystal X-ray diffraction, IR spectroscopy, elemental analysis, TG and PXRD. The complex crystallizes in monoclinic, space group P1 with a = 9.0303（12）, b = 10.0796（13）, c = 12.7966（17） A, a = 99.268（2）, β= 94.490（2）, y = 103.722（3）°, V = 1108.5（3） A3, Z = 2, C48HasNsO14Ni3, Mr= 1126.99, Dc = 1.688 g/cm3, p = 1.344 mm1, S = 1.001, F（000） = 578, the final R = 0.0389 and wR = 0.0895 for 3083 observed reflections （I 〉 2σ（I））. In the title complex, the flexible BTA3- ligands utilize oxygen atoms of carboxylate groups to coordinate with Ni（II） ions to form two-dimensional double-layer networks which are further pillared into a three-dimension framework via the rigid ditopic ligand L. Topological analysis revealed that complex 1 is a typical （3,8）-connected tfz-d 3D network based on the trinuclear [Ni3（CO2）6N4] subunits.
Two new complexes,[Zn（L1）2（SCN）2]·H2O（1,L1 = 3,5-dimethyl-4-p-tolyl-4H1,2,4-triazole and [Cd3（L2）6（SCN）6]（2,L2 = 3,5-dimethyl-4-phenyl-4H-1,2,4-triazole）,have been hydrothermally prepared and characterized by single-crystal X-ray diffraction,IR spectroscopy,elemental analysis and PXRD.Complex 1 crystallizes in monoclinic,space group P21 /n with a = 11.246（13）,b = 9.640（11）,c = 26.13（3）,β = 100.97（3）,V = 1108.5（3） 3,Z = 4,C24 H28 N8 OS2 Zn,Mr = 572.02,Dc = 1.366 g/cm3,μ = 1.065 mm-1,S = 0.992,F（000） = 1184,the final R = 0.0602 and wR = 0.1700 for 2925 observed reflections（I 2σ（I））.Complex 2 crystallizes in triclinic,space group P1 with a = 11.6669（3）,b = 12.0957（2）,c = 14.3674（3）,α = 105.380（3）,β = 91.020（2）,γ = 92.4100（10）o,V = 1952.30（7）3,Z = 1,C66H66N24S6Cd3,Mr = 1725.08,Dc = 1.467 g/cm3,μ = 1.025 mm-1,S = 1.037,F（000） = 870,the final R = 0.0336 and wR = 0.0946 for 7819 observed reflections（I 2σ（I））.In the title complexes,complex 1 is a mononuclear molecule where the centre Zn（II） coordinates to two 3,4,5-substituted 1,2,4-triazole ligands（L1） and two terminal SCN-anions in a tetrahedral environment while six-coordinated centre Cd（II） atoms with octahedral geometry in complex 2 are bridged by virtue of substituted 1,2,4-triazole（L2） in N1,N2-bridging mode and μ2-N,N-SCN-anions into a trinuclear molecule.
