吡嗪-2-羧酸铜配合物[Cu(C_5H_3N_2O_2)_2]的合成、晶体结构和光谱性质

Synthesis,Crystal Structure and Spectral Properties of the Copper Coordination Polymer [Cu(C_5H_3N_2O_2)_2] with Pyrazine-2-carboxylic Acid

用吡嗪-2-羧酸合成了配合物[Cu(C5H3N2O2)2],并通过元素分析、红外分析及X-射线衍射对其结构进行了表征.晶体属单斜晶系,空间群为:P2(1)/c,晶胞参数:a=5.0624(9),b=15.414(3),c=7.1110(13),β=106.701(2)°,V=531.48(16)3,Z=2.F(000)=310,吸收系数μ=2.072mm-1,最终偏离因子R1=0.0216,wR2=0.0594.中心铜原子与两个吡嗪-2-羧酸配体形成配合物分子,各分子之间通过弱相互作用形成一维链状结构.

A novel copper coordination polymer [Cu（C5H3N2O2）2] has been synthesized and it was characterized by elemental analysis,FTIR and X-ray diffraction single-crystal structure analyses.Crystal data： monoclinic,space group P2（1）/c,a = 5.0624（9） ,b = 15.414（3）,c = 7.1110（13）,β= 106.701（2）°,V= 531.48（16）3,Z=2,F（000） = 310,final R indices： R1 = 0.0216,wR2 = 0.0594.In the molecular structure,the central Cu ion is coordinated to two Pyrazine-2-carboxylic acid molecules.The pack structure shows that one dimension chain is formed by weak interaction among molecules.