权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Synthesis of Stable Silyl Radicals and Their Application to Multi-spin System

稳定硅基自由基的合成及其在多自旋系统中的应用

基本信息

批准号：
14340192
负责人：
MATSUMOTO Hideyuki
金额：
$ 6.78万
依托单位：
Gunma University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

项目摘要

The following results have been obtained on the stabilization, syntheses, and structures and silyl radicals and the related open-shell species.1)The reduction of bromo[tris(triisopropylsilyl)]silane with alkali metals led to the formation of [tris(triisopropylsilyl)]silyl radical, which was isolated as yellow crystals. The molecular and crystal structure of the silyl radical were determined by X-ray crystallography. It was found that the formation of the stable silyl radical can be carried out in the preparative-scale experiment. The study on the magnetic properties of the silyl radical is underway.2)trans-1,2,2,3,4,4-Hexa-tert-buy1-1,3-cyclotetrasilanediyl)potassium, which represents the first example of cyclic silyl dianion, was synthesized by the reaction of trans-1,2,2,3,4,4-hexa-tert-buy1-1,3-dibromocyclotetrasilane with potassium in benzene. The X-ray crystallographic analysis of the compound-benzene complex showed a novel supramolecular structure, in which the compound and benzene are stacked alternatively to form an infinite 1-D structure.3)The silyl-centered biradical, 1,2,2,3,4,4-hexa-tert-buy1-1,3-cyclotetrasilanediyl), was formed as red crystals by the reduction of trans-1,2,2,3,4,4-hexa-tert-buy1-1,3-dibromocyclotetrasilane with potassium in benzene. Studies on the X-ray structure determination and magnetic properties of the crystalline biradical were underway.

在稳定性、合成、结构以及甲硅烷基和相关的开壳层物种方面取得了以下结果。 1)用碱金属还原溴代[三(三异丙基甲硅烷基)]硅烷导致形成[三(三异丙基甲硅烷基)]甲硅烷基自由基，分离出黄色晶体。甲硅烷基的分子和晶体结构通过X射线晶体学测定。发现稳定的甲硅烷基自由基的形成可以在制备规模的实验中进行。对硅基自由基磁性的研究正在进行中。2)反式-1,2,2,3,4,4-六叔-买1-1,3-环四硅烷二基)钾是第一个环状硅基双阴离子的例子，通过以下反应合成 trans-1,2,2,3,4,4-六叔-购买1-1,3-二溴环四硅烷与钾在苯中。化合物-苯配合物的X射线晶体分析显示出一种新颖的超分子结构，其中化合物和苯交替堆叠形成无限一维结构。 3)以甲硅烷基为中心的双自由基1,2,2,3,4,4-六叔丁基1-1,3-环四硅烷二基)通过还原形成红色晶体。 trans-1,2,2,3,4,4-六叔-购买1-1,3-二溴环四硅烷与钾在苯中。对晶体双自由基的 X 射线结构测定和磁性能的研究正在进行中。