ELECTRON-TRANSFER REACTIONS IN ORGANIC-CHEMISTRY .22. KINETICS AND PRODUCTS OF REACTIONS BETWEEN HEXACHLOROOSMATE(V) AND TETRAALKYLSTANNANES AND BENZYLTRIMETHYLSILANES

被引：3
作者：
EBERSON, L
NILSSON, M
机构：
来源：
ACTA CHEMICA SCANDINAVICA | 1993年 / 47卷 / 11期
关键词：
D O I：
10.3891/acta.chem.scand.47-1122
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The reaction between tetraphenylphosphonium hexachloroosmate(V) and tetraalkylstannanes and benzyltrimethylsilanes has been studied in order to provide further evidence for its electron-transfer character. All reactions were first order in [R(4)M](M = metal) and [OsCl6-] and both kinetics and product studies indicated that the mechanism involves an initial, slow and reversible electron-transfer step, followed by very fast cleavage of the radical cation formed. The kinetic data are discussed in terms of the Marcus theory of outer-sphere electron transfer, and it is found that the OsCl6-/benzyltrimethylsilane reactions deviate somewhat from outer-sphere behavior.
引用
收藏
页码：1122 / 1128
页数：7
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