The first alkynethiolate derivatives of bis(substituted cyclopentadienyl)titanium(IV) and their role in the synthesis of heterobimetallic compounds. Crystal structures of [Ti(η5-C5H4SiMe3)2(SCCBut)2] and [(η5-C5H4SiMe3)(SCCBut)Ti(µ-η5∶κ-P-C5H4PPh2)(µ-SCCBut)Pt(C6F5)2]†

Abstract

The first thioalkyne derivatives of functionalised titanocene of formula [Ti(η⁵-C₅H₄R′)(η⁵-C₅H₄R″)(SCCR)₂] (R = Bu^t, R′ = R″ = SiMe₃ 1a; R = Ph, R′ = R″ = SiMe₃ 1b; R = Bu^t, R′ = SiMe₃, R″ = PPh₂ 2a; R = Bu^t, R′ = R″ =  PPh₂ 3a) have been prepared by reaction of [Ti(η⁵-C₅H₄R′)(η⁵-C₅H₄R″)Cl₂] and LiSCCR in diethyl ether. Complexes 1a and 2a have been used as precursors in the synthesis of Ti–M (M = d⁶ or d⁸ metal) heteronuclear complexes showing different co-ordination modes. All compounds have been characterised by elemental analysis and ¹H, ³¹P, ¹⁹F and ¹³C NMR and infrared spectroscopy. The crystal structures of two complexes have been solved.