Synthesis and characterisation of mono- and di-nuclear mixed phosphathia complexes of gold(I): Crystal structures of [Au(RSC2H4SR)]PF6, [Au(RSC3H6SR)]PF6 and [Au2(RSC2H4SR)2]Cl 2·4CH2Cl2 (R = Ph2PC2H4)

DOI: 10.1039/DT9960001267

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 1267 - 1274 (1996)

Update date:2022-08-04

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Authors:

Gibson, Alexander M.

Reid, Gillian

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Article abstract of DOI:10.1039/DT9960001267

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 Au^I 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.

Full text of DOI:10.1039/DT9960001267

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