Synthesis and Structural Characterization of a New 3D Lead Coordination Polymer with a Tetrazole-1-acetate Ligand

One new lead coordination polymer,[Pb(tza) 2 ] n (1,Htza=tetrazole-1-acetic acid) has been synthesized under hydrothermal conditions and characterized by elemental analysis,IR spectroscopy,thermogravimetric analysis (TGA),fluorescence spectra and single-crystal X-ray diffraction.Coordination polymer 1 is of monoclinic system,space group C2/c with a=15.4388(16),b=10.4039(11),c=8.3360(8),β=119.2070(10)°,V=1168.7(2)3,C 6 H 6 N 8 O 4 Pb,Z=4,M r=461.38,D c=2.622 g/cm 3,μ(MoKα)=14.463 mm-1,F(000)=848,the final R=0.0373 and wR=0.0904 for 2744 observed reflections with I > 2σ(I).1 is a 3D coordination framework built from Pb-carboxylate chains and the tetrazole nitrogen atoms of tza ligands.Furthermore,the luminescent property of 1 has also been investigated.     

两个基于2-丙基-4，5-咪唑二甲酸的锶和钡配合物的合成，结构及性质研究

基于2-丙基-4,5-咪唑二甲酸配体合成了2个新型锶和钡配合物,分别为[Sr(H₂pimda)₂(H₂O)₂]_n (1)和{[Ba(H₂pimda)₂(H₂O)₃]H₂O}_n (2),(H₃pimda=2-丙基-4,5-咪唑二甲酸),用元素分析、红外光谱、热重分析对产物进行表征,用单晶X-射线衍射方法测定了配合物1和2的晶体结构。配合物1属于单斜晶系C2/c空间群,晶胞参数：a=1.307 18(12) nm,b=1.319 13(12) nm,c=1.168 24(11)nm,β=98.477 0(10)°。配合物2属于三斜晶系P1 空间群,晶胞参数：a=1.0316 0(10) nm,b=1.054 60(10) nm,c=1.098 11(11) nm,α=75.878 0(10)°,β=78.512 0(10)°,γ=84.399(2)°。并且研究了配合物1的荧光性质。