铜锌异双核配合物[CuZn(fsan)(H_2O)]·H_2O的合成、晶体结构和电化学性质

合成了标题化合物CuZn(fsan)(H2O)]H2O H4(fsan)为N, N?- 二(3-羧基水杨醛叉)缩乙撑二胺],用单晶X-ray衍射法测定了它的晶体结构,该晶体属单斜晶系,空间群P21/n,a = 11.695(2), b = 14.646(3), c = 12.265(3) ? ?= 118.46(3)°, V = 1847.0(6) ?,C18H12CuN2O8Zn, Mr = 513.21, Z = 4, Dc = 1.846 g/cm3, (MoK? = 2.502mm-1,F(000) = 1028,R = 0.0478,wR = 0.0902 (I>2(I)), 2951个可观测衍射点。该分子结构为双核单元,铜原子位于“内部”由2个氮原子和2个酚氧原子构成的平面正方场中。“外部”锌原子与2个酚氧原子、2个端基羧氧原子及轴向水分子中的氧原子配位,锌原子处于变形四方锥几何构型之中。金属原子通过2个酚氧原子桥联在一起。结合晶体结构对配合物做了电化学研究。

Synthesis, Molecular Structure and Electrochemical Property of Heteronuclear Complex, [CuZn(fsan)(H2O)]·H2O

The complex CuZn(fsan)(H2O)]H2O, where H4(fsan) denotes the binucleating ligand derived from the schiff base N,N-(3-carboxybenzylidene)-ethylenediamine, was synthesized and its crystal structure was determined by single-crystal X-ray diffraction method. This compound crystallizes in monoclinic, space group P21/n with a = 11.695(2), b = 14.646(3), c = 12.265(3) ? ?= 118.46(3), V = 1847.0(6) 3,C18H12CuN2O8Zn, Mr = 513.21, Z = 4,Dc =1.846 g/cm3,(MoK? = 2.502 mm-1,F(000) = 1028,R = 0.0478 and wR = 0.0902 for 2951 observed reflections with I >2(I). The copper atom is coordinated by two nitrogen atoms and two phenolic oxygen atoms in a square-plane manner. The zinc atom is coordinated by two phenolic oxygen atoms, two equatorial carboxyl oxygen atoms and one axial water oxygen atom in a distorted square pyramid. The two metal atoms are bridged by two phenolic oxygens. The electrochemical property of the complex was also investigated.