Unusual reaction pathways of gallium(III) silylamide complexes

The synthesis of homoleptic gallium(III) bis(dimethylsilyl)amide Ga[N(SiHMe was attempted via different pathways. A transsilylamination protocol using Ga[N(SiMe and HN(SiHMe was unsuccessfully applied. An unexpected side product, MeGa[N(SiMe )SiMe N(SiMe , could be obtained from the synthesis of hom...

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Bibliographic Details
Published in:Main group metal chemistry 2013-12, Vol.36 (5), p.169-180
Main Authors: König, Sonja N., Gerstberger, Gisela, Schädle, Christoph, Maichle-Mössmer, Cäcilia, Herdtweck, Eberhardt, Anwander, Reiner
Format: Article
Language:English
Subjects:
aluminum(III)
gallium(III)
hydride
methyl abstraction
silylamide
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Summary:The synthesis of homoleptic gallium(III) bis(dimethylsilyl)amide Ga[N(SiHMe was attempted via different pathways. A transsilylamination protocol using Ga[N(SiMe and HN(SiHMe was unsuccessfully applied. An unexpected side product, MeGa[N(SiMe )SiMe N(SiMe , could be obtained from the synthesis of homoleptic gallium(III) bis(trimethylsilyl)amide via GaCl and LiN(SiMe . Alkane elimination from Me Ga or Et Ga and HN(SiHMe did not lead to the isolation of Ga[N(SiHMe either. When a salt metathesis route was conducted, reacting GaCl with LiN(SiHMe , the silylamido-bridged dimeric hydride complex {H Ga[μ-N(SiHMe ]} was obtained. Its further reaction with ′, ′-tetramethylethylendiamine (tmeda) gave the dinuclear, tmeda-bridged {[H GaN(SiHMe (μ-tmeda)}.
ISSN:0792-1241
2191-0219
DOI:10.1515/mgmc-2013-0039