Darstellung, Struktur und einige Reaktionen von Tris(dimethylamino)gallan / Preparation, Structure and Some Reactions of Trisdimethylaminogallane
Open Access
- 1 October 1975
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 30 (9-10) , 681-687
- https://doi.org/10.1515/znb-1975-9-1006
Abstract
The aminogallanes Ga[N(CH3)2]3 (1), ClGa[N(CH3)2]2 (2) and Ga[N(Si(CH3)3)2]3 (3) are prepared by reacting GaCl3 with LiN(CH3)2 and NaN[Si(CH3)3]2, respectively. Excess LiN(CH3)2 leads to LiGa[N(CH3)4] which reacts with GaCl3 to yield 1. CS2 inserts into all Ga—N bonds of 1 yielding monomeric Ga[S2CN(CH3)3)2]3 (4). 1 dimerizes via dimethylamino bridges. In contrast, 1H. NMR spectra indicate group exchange for dimeric 2. Assoziation of 3 is prevented due to steric hindrance. The gallium atom in 4 exhibits hexacoordination, and there is evidence for the binding of the (CH3)2NCS2 groups through S atoms only.Keywords
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