Journal article

Low valent and hydride complexes of NHC coordinated gallium and indium

Graham E Ball, Marcus L Cole, Alasdair I Mckay

DALTON TRANSACTIONS | ROYAL SOC CHEMISTRY | Published : 2012

Abstract

The reactions of the N-heterocyclic carbene 1,3-dimesitylimidazol-2-ylidene (IMes) with Ga[GaCl(4)], "GaI", InCl(2) and GaBr(3) have been examined. All reactions using a low valent gallium or indium starting material led to species of the form [{MX(2)(IMes)}(2)], where M = Ga, X = Cl (1), I (2); M = In, X = Cl (3), with disproportionation and loss of gallium metal in the case of 2. Reaction of IMes with gallium tribromide yields the air and moisture stable complex [GaBr(3)(IMes)] (4), which has been used as a precursor to the mixed bromohydrides [GaBrH(2)(IMes)] (5) and [GaBr(2)H(IMes)] (6) by (i) ligand redistribution with [GaH(3)(IMes)], (ii) hydride-bromide exchange with triethylsilane, a..

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University of Melbourne Researchers

Grants

Awarded by Australian Research Council


Funding Acknowledgements

The authors would like to thank the Australian Research Council (DP110104759 and DP0881692) for financial support of this research, and the Australian Commonwealth for the provision of an Australian Postgraduate Award (AIM).