Tetrasupersilyl-tetrahedro-tetragallan (tBu3Si)4Ga4 -: A tetrahedrane with a very compact Ga4-tetrahedral skeleton

被引：50

作者：

Wiberg, N ^{[1
]}

Amelunxen, K ^{[1
]}

Lerner, HW ^{[1
]}

Nöth, H ^{[1
]}

Ponikwar, W ^{[1
]}

Schwenk, H ^{[1
]}

机构：

[1] Univ Munich, Inst Anorgan Chem, D-80333 Munich, Germany

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1999年 / 574卷 / 02期

关键词：

gallium; silicon; tetrahedro-tetragallan; oxogallan; dihydroxogallan; x-ray structure analyses;

D O I：

10.1016/S0022-328X(98)00836-5

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reaction of R-2*GaX (R* = Supersilyl Si'Bu-3, X = Cl, Br) with R*Na leads in heptane at room temperature to the dark blue radical R-2(*.)-GaR* which transforms at 100 degrees C in heptane into (Bu3Si.)-Bu-t and dark violet R-4*Ga-4 (1). According to X-ray structure analysis. 1 contains a very compact Ga-4 tetrahedron (average Ga-Ga bond length 2.572 Angstrom). With oxygen, the thermo- and water-stable compound 1 reacts under formation of colorless R-4*Ga4O4 = [R*GaO](4), which after X-ray structure analysis contains a Ga4O4 heterocubane. By hydrolysis, tetrameric oxogallane R*GaO transforms into a tetrameric dihydrooxogallane R*Ga(OH)(2) which, according to X-ray structure analysis, forms chains of molecules [R*Ga(OH)(2)](4), held together by water molecules. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：246 / 251

页数：6

共 25 条

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