由 Cr III、Mn II、Co II 和 Ni II 复合物促进的正对正电子转换反应的速率常数 k CR 与相应的金属电子析出相关,其描述方法是复合物中的电子间斥力参数 B 与自由气态离子中的电子间斥力参数 B 0 之间的比率 β。通过对另外八个转化反应的研究,改进了相关线的参数。经证实,β→0 的 k CR 值与金属离子的未配对电子数成正比,新测定的比例常数 χ 为 3.0±0.2 dm3 mol -1 ns -1 electron -1 (参照之前的值 3.7±0.6)。
Isomer Distribution and Stereoselectivity in Electron Transfer Reactions of [Co(dien)<sub>2</sub>]<sup>2+</sup>with Anionic Cobalt(III) Complexes
作者:Akira Tatehata、Shigeo Yamada、Akira Muraida
DOI:10.1246/bcsj.73.1135
日期:2000.5
The product distribution of the three geometricalisomers and the stereoselectivity of the u-fac isomer in the oxidation of [Co(dien)2]2+ (dien = diethylenetriamine) by optically active anionic cobalt(III) complexes were significantly influenced by the geometrical arragement of the coordinated atoms in the oxidants, reflecting the differences in the stabilization of the precursor assemblies due to