Monopentamethylcyclopentadienyltitanium(IV) halo-alkoxides, alkyl-alkoxides and acetylacetonates

Abstract

Reactions of (C5Me5)TiCl3 with lithium alkoxides in 1:1 or 1:2 molar ratio have given the halo-alkoxides (C5Me5)TiCl3−n(OR)n(n = 1, R = Me, SiPh3; n = 2, R = SiPh3) and (C5Me5)TiCl (O2R′)(R′ = C6H4, C6H3-4-tBu). Protonolysis of (C5Me5TiMe3 with HOSiPh3 and Hacac gives (C5Me5)TiMe(OSiPh3)2 and (C5Me5)TiMe2(acac), and (C5Me5)TiCl2Me likewise gives (C5Me5)TiCl2(OC6H3-2.6-Me2) and (C5Me5)TiCl2(acac). The crystal structure of (C5Me5)TiCl2(OC6H3-2,6-Me2) has been determined and shows it to be monomeric, with a symmetry plane, a TiO distance of 1.785(2) Å, and a TiOC angle of 162.3(2)°.