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Main Group Metal Chemistry

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Volume 36, Issue 5-6


Unusual reaction pathways of gallium(III) silylamide complexes

Sonja N. König / Gisela Gerstberger
  • Anorganisch-chemisches Institut, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany
  • Other articles by this author:
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/ Christoph Schädle / Cäcilia Maichle-Mössmer / Eberhardt Herdtweck
  • Anorganisch-chemisches Institut, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany
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/ Reiner Anwander
Published Online: 2013-10-30 | DOI: https://doi.org/10.1515/mgmc-2013-0039


The synthesis of homoleptic gallium(III) bis(dimethylsilyl)amide Ga[N(SiHMe2)2]3 was attempted via different pathways. A transsilylamination protocol using Ga[N(SiMe3)2]3 and HN(SiHMe2)2 was unsuccessfully applied. An unexpected side product, MeGa[N(SiMe3)SiMe2N(SiMe3)2]2, could be obtained from the synthesis of homoleptic gallium(III) bis(trimethylsilyl)amide via GaCl3 and LiN(SiMe3)2. Alkane elimination from Me3Ga or Et3Ga and HN(SiHMe2)2 did not lead to the isolation of Ga[N(SiHMe2)2]3 either. When a salt metathesis route was conducted, reacting GaCl3 with LiN(SiHMe2)2, the silylamido-bridged dimeric hydride complex {H2Ga[μ-N(SiHMe2)2]}2 was obtained. Its further reaction with N,N,N′,N′-tetramethylethylendiamine (tmeda) gave the dinuclear, tmeda-bridged {[H2GaN(SiHMe2)2]2(μ-tmeda)}.

This article offers supplementary material which is provided at the end of the article.

Keywords: aluminum(III); gallium(III); hydride; methyl abstraction; silylamide


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About the article

Corresponding author: Reiner Anwander, Institut für Anorganische Chemie, Auf der Morgenstelle 18, D-72076 Tübingen, Germany, e-mail:

Received: 2013-08-09

Accepted: 2013-09-20

Published Online: 2013-10-30

Published in Print: 2013-12-01

Citation Information: Main Group Metal Chemistry, Volume 36, Issue 5-6, Pages 169–180, ISSN (Online) 2191-0219, ISSN (Print) 0792-1241, DOI: https://doi.org/10.1515/mgmc-2013-0039.

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