Gold(I) organosulfinate and organosulfonate complexes

P. Römbke, A. Schier, H. Schmidbaur

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Abstract

(Phosphine)gold(I) organosulfonates and organosulfinates (R3P)Au-OS(O)2R′ (A) and (R3P)Au-S(O)2R′ (B), respectively, are active catalysts for the addition of alcohols to alkynes. A series of compounds of type A (R = Ph and Me, R′ = p-Tol; R = Ph, R′ = p-Py; R = Ph and Me, R′ = Et) and type B (R = Ph, R′ = p-Tol; R = Ph and Me, R′ = Me) were prepared and characterized by analytical and spectroscopic data. The crystal structure of [p-TolS(O)2O-Au(PPh3)]·CH2Cl 2 was determined by single crystal X-ray diffraction. The molecules are aggregated into pairs with O-bonded gold atoms and short Au ··· Au contacts [3.1770(3) Å]. By contrast, crystals of "p-TolS(O)O-Au(PPh3)" contain intimately aggregated ion pairs of the homoleptic components [(Ph3P)2Au]+[{p-TolS(O)2} 2Au]- with a short Au ··· Au contact [2.9249(2) Å] and a strongly bent P-Au-P axis [156.66(4)o]. The sulfinate ligands are both S-bonded to the gold atom. Analogous p-tolylsulfinate complexes were also prepared with the isocyanide ligands tBuNC and 2,6-Me2C6H3NC. Their spectroscopic data indicate ionic solid state structures with homoleptic cations and anions.

Original languageEnglish
Pages (from-to)2482-2486
Number of pages5
JournalJournal of the Chemical Society. Dalton Transactions
Issue number17
DOIs
StatePublished - 2001
Externally publishedYes

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