Double deprotonation, ring-opening and C–C bond formation in a coordinated crown thioether. Formation and structure of an areneruthenium(II) ethenethiolate, [Ru(SCHCH2)(η6-C6Me5CH2CH2CH2SCH2CH2S)]

Abstract

Treatment of [Ru(η⁶-C₆Me₆)([9]aneS₃)](PF₆)₂([9]aneS₃= 1,4,7-trithiacyclononane) with an excess of potassium tert-butoxide gives an η¹-S-bonded ethenethiolate complex, [[graphic omitted])], which is characterised by single crystal X-ray analysis; it is formed as a result of deprotonation at two of the methylene carbon atoms of [9]aneS₃ and cleavage of two C–S bonds, followed by deprotonation at one of the C₆Me₆ methyl groups.