New Coordination Polymers Based On Triazole Ligands

In the construction of the coordination polymers, carboxylic acid ligand andorganic flexible polydentate triazole ligand are very important organic ligands. Both ofthem have a variety of coordination ways, when they complex with transition metalcations, forming coordination polymers which possess variety structures and uniqueproperties. Therefore, the research of synthesize coordination polymers with carboxylicacid ligand and organic flexible polydentate triazole ligand is profound.In the work, we reported8coordination polymers using flexible ligands triazoleacetic acid （Taa） and4-amino-3,5-bis（1-triazolylmethyl）-1,2,4-triazole （Abtt） withtransition metal cations Cd（Ⅱ）, Cu（Ⅱ）, Zn（Ⅱ）, Mn（Ⅱ）, Co（Ⅱ）, Ni（Ⅱ）,Ag（Ⅰ）.[Co（Taa）₂]n（1）,[Mn（Taa）₂]n（2）,[Zn（Taa）₂]n（3）,[Cu（phen）（Taa）₂（H₂O）]·NO₃（4）,[Ag3（Taa）₂·ClO₄]n（5）,[Co（Abtt）₂(H₂SiW₁₂O₄₀)]·2H₂O （6）,[Ni（Abtt）₂(H₂SiW₁₂O₄₀)]·2H₂O （7）,[Cd（Abtt）·3H₂O]·0.5(SiW₁₂O₄₀).·1.5H₂O（8）.The8compounds have been characterized by elemental analysis, IR spectra,luminescence analyses, thermogravimetric analyses and single crystal X-ray. We testedthe luminescence spectroscopy of （3）,（5）and studied the thermogravimetric property ofthe complex （1）,（2）,（3）,（4）,（6）,（7）,（8）, The compounds of （1）,（2）,（3）,（4）,（5） werealso determined by XRD.In complexes （4）,（6）,（7）,（8）, ligand and the metal cations formed onedimensional chain structure through the bridge, In （6） and （7）, the polyoxometalatesanions coordinate with metal cations,however in （8） the polyoxometalates anions act astamplates; another3complexes（1）,（2）,（3） are two-dimensional grid structure, thestructure of （1）,（2） are the same, both of them formed4,4-network, the coordinationway of compound （3） is a bit different, however the terminal structure is also4,4-network, in the5thcoordination polymer, the center atom has two kind ofcoordination ways, at last it forms a three-dimensional structure.