Abstract
Coordinatively unsaturated complex Cp*Ru(μ-SPri)2RuCp* (1, Cp* = η5-C5Me5) reacts with excess HC⋮CR (R = Tol, CCH(CH2)3CH2; Tol = 4-C6H4Me) to form dinuclear ruthenacyclopentenyl complexes Cp*Ru(μ-SPri)[η2:η3-μ-CH(Tol)C{C(Tol)CHSPri}CHC(Tol)]RuCp* (3) and Cp*Ru(μ-SPri)[η2:η3-μ-C{C(CCH(CH2)3CH2)CHSPri}CHC{(CH2)3CH2}CH]RuCp* (4). These dinuclear metallacycles 3 and 4 are readily converted to μ-σ,π-alkenyl complexes Cp*(ButNC)Ru(μ-SPri)[η1:η2-μ-C(Tol)CHC{C(Tol)CHSPri}CH(Tol)]RuCp* (5) and Cp*(ButNC)Ru(μ-SPri)[η1:η2-μ-C{C(CCH(CH2)3CH2)CHSPri}CH{CCH(CH2)3CH2}]RuCp* (6), respectively, through ButNC-induced ring-opening reactions with retention of the singly bonded diruthenium core bridged by a thiolato ligand. The structures of 3−6 have been determined by X-ray crystallography.
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