Co-ordinative ability of the new compounds [Ti(η5-C5H4R)2(CCBut)2] (R = PPh2, Ph2PO or Ph2PS) as precursors in the synthesis of heterodi- and heterotri-nuclear species. Crystal structure of [ClCu(µ-η5∶κP-C5H4PPh2)2Ti(µ-η2-CCBut)2CuCl]

Abstract

New mononuclear bis(alkyne) derivatives of functionalised titanocene [Ti(η⁵-C₅H₄R)₂(CCBu^t)₂] (R = PPh₂ 1, Ph₂PO 7 or Ph₂PS 8) have been isolated by reaction of [Ti(η⁵-C₅H₄R)₂Cl₂] (R = PPh_2, Ph₂PO or Ph₂PS) and LiCCBu^t in diethyl ether. The reactions of the former species with (CuCl)_n and [Mo(CO)₄(nbd)] have been investigated. Novel heterobi- [L_nM(µ-η⁵∶κP-C₅H₄PPh₂)₂Ti(µ-η²-CCBu^t)₂] [ML_n = CuCl 4 or Mo(CO)₄ 5], [{η⁵-C₅H₄P(E)Ph₂}₂Ti(µ-η²-CCBu^t)₂CuCl] (E = O 9 or S 10) and heterotri-nuclear complexes [L_nM(µ-η⁵∶κP-C₅H₄PPh₂)₂Ti(µ-η²-CCBu^t)₂CuCl] [ML_n= CuCl 2 or Mo(CO)₄ 6] have been synthesized. The crystal structure of compound 2 has been solved.