Journal of the Chemical Society, Dalton Transactions p. 1267 - 1274 (1996)
Update date:2022-08-04
Topics:
Gibson, Alexander M.
Reid, Gillian
Mononuclear gold(I) complexes of two linear P2S2 donor ligands, [AuL]PF6 [L = RSC2H4SR or RSC3H6SR (R = Ph2PC2H4)] have been prepared by reaction of [AuCl(tht)] (tht = tetrahydrothiophene) with L and TlPF6 in MeCN solution. The crystal structure of [Au(RSC2H4SR)]+ shows a primary P2-donor set with additional long-range thioether interactions giving a distorted linear geometry around AuI in the solid state; Au-P 2.284(7), 2.302(7), Au...S 2.899(6), 3.190(7) A. The structure of [Au(RSC3H6SR)]+ shows a very similar arrangement; Au-P 2.279(6), 2.287(6) A, Au...S 3.097(5), 3.101(6) A. The non-conducting binuclear species [Au2Cl2L] were obtained by reaction of [AuCl(tht)] with L in a 2:1 molar ratio in CH2Cl2 solution, while a 1:1 [AuCl(tht)]: RSC2H4SR ratio yielded the unusual species [Au2(RSC2H4SR)2]Cl2, the crystal structure of which shows a linear P2-donor set at each Au, giving a helical cavity which contains a Cl- anion. All complexes have been characterised by IR, 1H and 31P NMR spectroscopies, FAB mass spectrometry and microanalyses.
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