Control of coordination modes of a ligand in metal complexes is significant because the coordination modes influence catalytic properties of transition metal catalysts. Reactions of 2-diphenylphosphinoazobenzenes, which are in equilibrium with the inner phosphonium salts, with ZnCl2, W(CO)5(THF), and PtCl2(cod) gave three different coordination types of metal complexes with distinctive UV-vis absorptions. All the complexes were characterized by X-ray crystallographic analyses. In the zinc and tungsten complexes, the source molecule functions as an amide ligand and a phosphine ligand, respectively. In the platinum complex, the phosphorus molecule works as a tridentate ligand with formation of a carbon–platinum bond.
金属配合物中
配体的配位模式的控制具有重要意义,因为配位模式会影响过渡
金属催化剂的催化性能。与内
磷盐平衡的2-二苯基
磷基
偶氮苯与ZnCl2、W(CO)5(THF)和PtCl2(cod)的反应产生了三种不同的
金属配合物类型,并具有独特的紫外-可见吸收特征。所有配合物都通过X射线晶体学分析进行了表征。在
锌和
钨配合物中,源分子分别作为酰胺
配体和
磷配体。在
铂配合物中,
磷分子作为三齿
配体,与
铂形成碳-
铂键。