Abstract
TERVALENT gold is usually four-covalent in its compounds and possesses a square-planar arrangement associated with 5d6s6p 2 bonding1. Complexes of gold(III) with a co-ordination number greater than four have recently been prepared by Harris and Nyholm2. These compounds are of the types [Au(diarsine)2 X](ClO4)2 and [Au(diarsine)2 X 2]ClO4 (where X = Br or I and diarsine = o-phenylenebis-(dimethylarsine)). Bivalent palladium and platinum, which possess a similar d 8 electronic configuration, also exhibit co-ordination numbers greater than four with this ligand3,4.
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References
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HARRIS, C., REECE, I. Formation of Higher Bromo-Complexes of Tervalent Gold in Non-Aqueous Solution. Nature 182, 1665 (1958). https://doi.org/10.1038/1821665a0
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DOI: https://doi.org/10.1038/1821665a0
