Study On The Synthesis And Properties Of Heterometallic Coordination Compounds Based On Tetrazole-1-acetale Acid Ligangs

Tetrazole and its derivatives ligands have strong coordination ability and flexible coordination modes.The tetrazolium complexes have become the potential material in the fields of gas storage,magnetic materials,proton conduction and catalysis,because of their excellent structure and superior performance.In this dissertation,two series of fifteen complexes were prepared by solvothermal method and atmospheric evaporation method with organic ligand of tetrazole-1-acetate acid and two metal ions.The structure and crystal data of these coordination complexes were characterized by many kinds of analysis methods,such as X-ray single crystal diffraction(XRSCD),Inductively coupled plasma atomic emission spectroscopy(ICP-AES),powder X-ray diffraction(PXRD),infrared radiation spectrum(IR)and thermogravimetric analysis(TGA).Complex 1-9{[Cox Ni2-x(tza)2(Htza)(?3-O)(H2O)]·H2O}n(x=0,0.20,0.40,0.60,0.80,1.00,1.08,1.20,1.28)presented isomerism two-dimensional layered structure.With increasing amount of cobalt ion,the magnetic properties of these complexes showed from ferromagnetic to antiferroma gnetic.These isomorphous coordination polymer-derived metal oxides were used as electrode materials of lithium ion battery,and at 200 m A/g the specific capacity of the electrode materials began to slowly rise after 69 and 55 cycles,respectively,and the mixed metal oxides exhibited better specific capacity,cycle stability and rate performance.Complex 10-15{[MFe3(tza)6(?3-O)(H2O)3](NO3)3(H2O)3}n(M=Cu,Cd,Co,Zn,Ni,Mn)are all three-dimensional frameworks with one-dimensional channel.The proton conduction of complexes 10-13 is tested.The electrical conductivity of complexes 12 and 13 reached 1.30×10-4 S/cm and 1.14×10-3 S/cm at 25 ? and 97% RH,respectively,showing good electrical conductivity.The magnetic properties of complexes 10-12 were tested and all exhibited strong antiferromagnetic interactions.