咪唑桥连四氮大环双铜配合物合成和晶体结构

超氧化物歧化酶由于它能有效地消除毒性很大的O；自由基对正常细胞的侵害，防止细胞癌变与衰老·近年来日益受到重视·铜锌超氧化物歧化酶（CuZn－SOD）的活性中心具有独特的咪哩桥连的Cu口）、Zn（11）离子的结构，令人感兴趣的是用铜取代锌后而形成的四铜蛋白CllZCllZSOD仍具有催化活性［‘］．作为Cll。Cll。SOD活性中心的模拟物，一系列以咪哩桥连的双铜配合物被制备和研究＊．我们合成了以四氮大环为配体的咪哩桥连双铜配合物，以下报导此配合物的合成和晶体结构．1实验1．1配体、配合物的合成与单晶的制备1厂一二甲基4，4，71…

Synthesis and Crystal Structure of the Imidazale-bridged Dicopper(II) Complex with Tetraaza Macrocycles

This paper reports the synthesis and structure of the imidazolate-bridged dicopper (Ⅱ) complex with tetraaza macrocycles μ-C3H5N5-Cu2(C10H24N4)2]Br(ClO4)2•C2H5OH (C10H24N4=1,7-dimethyl-1,4,7,10,-tetraazacyclododecane). The crystal structure of the complex has been determined by X-ray single crystal diffraction method. The complex crystallizes in the monoclinic space group P21 /c with a=8.698(3), b=25.713(7), c=18.075(6)Å, β=102.66(3), V=3944(3)A3, Z=4. In the μ-C3H5N5-Cu2(C10H24N4)2]3+ complex ion the two fivecoordinated copper(Ⅱ) ions are in square pyramid environment, in which the four nitrogen atoms of tetraaza macrocycle form the basal plane and the nitrogen atom from bridged-imidazole occupies the apex of square pyramid. The axial Cu-N bond lengths (average, 2.059 Å) are consistent with the Cu-N bond lengths(average, 2.042 Å) which on the basal plane of the square pyramid.