Quantitative evaluation of Lewis acidity of organotin compounds and the catalytic reactivity in electron transfer

被引：24

作者：

Ohkubo, K

Suenobu, T

Imahori, H

Orita, A

Otera, J

Fukuzumi, S

机构：

[1] Okayama Univ Sci, Dept Appl Chem, Okayama 7000005, Japan

[2] Osaka Univ, Grad Sch Engn, Dept Mat & Life Sci, CREST,Japan Sci & Technol Corp, Suita, Osaka 5650871, Japan

来源：

CHEMISTRY LETTERS | 2001年 / 10期

关键词：

D O I：

10.1246/cl.2001.978

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The g-values of ESR spectra of superoxide (O-2(.-)) complexes with various organotin compounds acting as Lewis acids were determined in acetonitrile at 143 K. The binding energies (DeltaE) in the complexes between organotins and O-2(.-) have been evaluated from deviation of the g(zz)-values from the free spin value. The DeltaE values are well correlated with the catalytic reactivity of organotins as well as a series of metal ions acting as Lewis acids to promote electron transfer from cobalt(II) tetraphenylporphyrin to O-2, which would not occur in the absence of Lewis acids under otherwise the same experimental conditions.

引用

页码：978 / 979

页数：2