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Issue 16, 2001
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Unexpected formation of gallium–gallium single bonds by irradiation of the hydride [(Me3C)2GaH]3

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Abstract

Di(tert-butyl)gallium hydride 1 dismutates partially in solution forming tri(tert-butyl)gallium 2 and the sesquihydride [(Me3C)2GaH]2[H2GaCMe3]2 (3). The loss of tert-butyl radicals upon irradiation of this mixture with day light or an UV lamp gave the hexagallium compound (Me3CGaGaCMe3)2(μ-H)2[μ-H2Ga(CMe3)2]2 (4), which possesses two Ga–Ga single bonds. These Ga2 groups are bridged by two hydrogen atoms to give a six-membered Ga4H2 heterocycle. Couples of opposite gallium atoms of this heterocycle are bridged via Ga–H–Ga 3c–2e bonds by two H2Ga(CMe3)2 ligands, which are situated above and below the molecular plane. Compound 4 may be described as a hypho-hexagallane(14) cluster compound.

Graphical abstract: Unexpected formation of gallium–gallium single bonds by irradiation of the hydride [(Me3C)2GaH]3

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Article information


Submitted
17 Apr 2001
Accepted
11 Jun 2001
First published
31 Jul 2001

J. Chem. Soc., Dalton Trans., 2001, 2398-2400
Article type
Paper

Unexpected formation of gallium–gallium single bonds by irradiation of the hydride [(Me3C)2GaH]3

W. Uhl, L. Cuypers, G. Geiseler, K. Harms and B. Neumüller, J. Chem. Soc., Dalton Trans., 2001, 2398
DOI: 10.1039/B103409J

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