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Inorganics 2014, 2(4), 540-551;

Reactivity of Mononuclear and Dinuclear Gold(I) Amidinate Complexes with CS2 and CsBr3

Department of Chemistry, University of Missouri, Columbia, MO 65211-7600, USA
Author to whom correspondence should be addressed.
Received: 20 August 2014 / Revised: 10 September 2014 / Accepted: 11 September 2014 / Published: 8 October 2014
(This article belongs to the Special Issue Frontiers in Gold Chemistry)
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To probe the reactivity of gold-nitrogen bonds, we have examined the insertion chemistry with carbon disulfide (CS2) as well as oxidation with cesium tribromide (CsBr3) with Au(I) amidinate complexes. The reaction of Ph3PAuCl with Na[(2,6-Me2C6H3N)2C(H)] yields the mononuclear, two-coordinate gold(I) complex, Ph3PAu[κ1-(2,6-Me2C6H3N)2C(H)], 1. The reactivity of 1 with CS2 produced the mononuclear Au(I) compound, Ph3PAu{κ1-S2C[(2,6-Me2C6H3N)2C(H)]}, 2. In the case of CsBr3 the previously reported dinuclear Au(I) complex, Au[(2,6-Me2C6H3N)2C(H)]2, 3, was isolated with formation of Ph3PBr2. We also compared the reactivity of CS2 and CsBr3 with 3. Carbon disulfide insertion with 3 produces a dimeric product, Aun[CS2(2,6-Me2C6H3NC(H)=NC6H3Me2)]n, 4, featuring a dinuclear core with linking aurophilic interactions, making it appear polymeric in the solid state. When CsBr3 is reacted with 3 the Au(II,II) product is obtained, Au2[(2,6-Me2C6H3N)2C(H)]2(Br)2, 5. View Full-Text
Keywords: gold; triphenylphosphine; insertion; carbon disulfide; oxidation gold; triphenylphosphine; insertion; carbon disulfide; oxidation

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Lane, A.C.; Barnes, C.L.; Vollmer, M.V.; Walensky, J.R. Reactivity of Mononuclear and Dinuclear Gold(I) Amidinate Complexes with CS2 and CsBr3. Inorganics 2014, 2, 540-551.

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