Tin-centered radical and cation: Stable and free

被引：70

作者：

Sekiguchi, A ^{[1
]}

Fukawa, T ^{[1
]}

Lee, VY ^{[1
]}

Nakamoto, M ^{[1
]}

机构：

[1] Univ Tsukuba, Dept Chem, Tsukuba, Ibaraki 3058571, Japan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2003年 / 125卷 / 31期

关键词：

D O I：

10.1021/ja030156+

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The first stable stannyl radical (tBu2MeSi)3Sn•(1) has been synthesized by the reaction of tBu2MeSiNa with SnCl2-dioxane in diethyl ether. The X-ray crystal structure and electron paramagnetic resonance (EPR) data of this radical show that 1 has a planar geometry, being a π-radical in both the solid and the liquid states. One-electron oxidation of 1 with Ph3C+·B(C6F5)4- in benzene quantitatively produced the corresponding cation (tBu2MeSi)3Sn+·B(C6F5)4- (2), representing the stable free stannylium ion that has been fully characterized by X-ray analysis and NMR data. Being free, 2 features a record downfield shifted resonance for stannylium ions: +2653 ppm. Copyright © 2003 American Chemical Society.

引用

页码：9250 / 9251

页数：2