两个基于苯并咪唑还原席夫碱的双核铜(Ⅱ)配合物的合成、晶体结构和电化学性质（英文）

Two Binuclear Cu(Ⅱ) Complexes of Reduced Schiff Base Ligand Containing Benzimidazole Ring: Syntheses, Structures and Electrochemical Properties

在甲醇体系中,分别将苯并咪唑还原席夫碱HL与四氟硼酸铜和硝酸铜进行配位反应得到2个结构类似的双核铜配合物[CuL(CH_3OH)]_2(BF_4)_2(1)和[CuL(NO_3)_2]_2(2)(HL=2-(((2-(2-benzimidazyl) ethyl)aimino)methyl)phenol),并用元素分析、红外光谱、紫外-可见光谱和单晶X射线衍射对其结构进行了表征。结构分析表明:2个配合物均属于单斜晶系,P2_1/c空间群,为酚氧桥联的双核铜结构,其中每个Cu(Ⅱ)处于N_2O_3的畸变四方锥构型。配合物中的氢键将配合物1和配合物2分别连接成一维和三维网络结构。采用循环伏安法测定了双核配合物的氧化还原电位,表明2个配合物均显示2个准可逆单电子还原过程。

Two binuclear copper(Ⅱ)complexes of the reduced Schiff base,namely,HL=2-(((2-(2-benzimidazyl)ethyl)aimino)methyl)phenol(HL)have been synthesized and characterized by C,H and N microanalyses,spectroscopic(FT-IR,UV-Vis)as well as electrochemical techniques and single-crystal X-ray diffraction.The crystal structures of[CuL(CH3OH)]2(BF4)2(1)and[CuL(NO3)2]2(2)show that the Cu(Ⅱ)atoms are bridged by two phenolato oxygen atoms in the dimers.The geometries around Cu(Ⅱ)atoms are distorted square pyramid with the Addison parameters(τ)of 0.31 and 0.35 for 1 and 2,respectively.Furthermore,the complex units in 1 and 2 are linked into 1D and 3D supramolecular networks by H-bonding in the solid state,respectively.The electrochemical studies of 1 and 2 show two quasi-reversible one electron reduction processes.CCDC:2276305,1;2276307,2.