BIS[BIS(TRIMETHYLSILYL)METHYL]GALLIUM BROMIDE AND MONOMERIC (BIS[BIS(TRIMETHYLSILYL)METHYL]GALLIUM)-[TRIS(TRIMETHYLSILYL)SILYL]TELLURIDE [(ME3SI)2CH]2GA-TESI(SIME3)3

被引：44

作者：

UHL, W ^{[1
]}

LAYH, M ^{[1
]}

BECKER, G ^{[1
]}

KLINKHAMMER, KW ^{[1
]}

HILDENBRAND, T ^{[1
]}

机构：

[1] UNIV STUTTGART,INST INTERDISCIPLINARY RES IMMUNOL DIS,W-7000 STUTTGART 80,GERMANY

来源：

CHEMISCHE BERICHTE-RECUEIL | 1992年 / 125卷 / 07期

关键词：

GALLIUM TELLURIDE; MONOMERIC ELEMENT ORGANIC; METATHESIS REACTION BETWEEN A DIGALLIUM(4) AND A DITELLANE DERIVATIVE; GALLIUM-TELLURIUM PI INTERACTION; TELLURIUM COMPOUNDS;

D O I：

10.1002/cber.19921250706

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Bis[bis(trimethylsilyl)methyl]gallium bromide GaBr[CH(SiMe3)2]2 (4), prepared from Ga2Br4 . 2 dioxane and bis(trimethylsilyl)methyllithium in the molar ratio of 1:3, reacts with the sterically high-shielded lithium tris(trimethylsilyl)silyltelluride . DME to yield [(Me3Si)2CH]2Ga-TeSi(SiMe3)3 (5). 5 can also be synthesized by a metathetic reaction between tetrakis-[bis(trimethylsilyl)methyl]digallium(4) and bis[tris(trimethylsilyl)silyl]ditellane in toluene at 100-degrees-C. A crystal structure determination shows the compound to be monomeric in the solid state and the atoms of the central C2Ga - TeSi moiety to lie in the mirror plane of the molecule. The short Ga Te distance of 253.5(1) pm as well as a hindered rotation (DELTA-E(rot) almost-equal-to 50 kJ . mol-1) as detected by NMR measurements might be interpreted in terms of a pi interaction between gallium and tellurium.

引用

页码：1547 / 1551

页数：5

共 38 条

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