Synthesis and Characterization of a Series of (Diphenyldipyrazolylmethane)copper Complexes as Possible Precursors to Type I Blue Copper Protein Active Site Models
作者:Janet L. Shaw、Thomas B. Cardon、Gary A. Lorigan、Christopher J. Ziegler
DOI:10.1002/ejic.200300547
日期:2004.3
A series of copper complexes employing the neutral, bidentate, pyrazole-based ligand diphenyldipyrazolylmethane was synthesized and fully characterized by various techniques, including elemental analysis, EPR, and structure elucidation by single-crystal X-ray diffraction. The structures of compounds 3−8 reveal variable coordination environments at the copper center, ranging from square pyramidal to
合成了一系列采用中性、双齿、吡唑基配体二苯基二吡唑基甲烷的铜配合物,并通过各种技术进行了充分表征,包括元素分析、EPR 和单晶 X 射线衍射结构解析。化合物 3-8 的结构揭示了铜中心的不同配位环境,范围从方形锥体到四面体,这取决于吡唑外围的空间体积和反离子的身份。与使用带负电荷的吡唑基硼酸盐或 β-二酮亚胺盐观察到的那些化合物相比,这些化合物的循环伏安法数据显示出正偏移的还原电位。这些结果表明,这些化合物可能会产生(硫醇)铜复合物,从而更准确地再现在蓝铜蛋白的电子转移过程中观察到的还原电位。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)