Syntheses and Properties of Cyclopentadienyl-Substituted Imidotitanium Fluorides

Abstract

The reaction of 2 equiv of Me3SnF with [(η5-C5H4Me)TiCl(NPh)]2 in the presence of at least 2 equiv of pyridine affords [(η5-C5H4Me)TiF(NPh)]2 (1) in high yield. (η5-C5H4SiMe3)TiCl(N-t-Bu)·py reacts quantitatively with an equimolar amount of Me3SnF to yield [(η5-C5H4SiMe3)TiF(N-t-Bu)]2 (2). The fluorides [η5-Cp‘TiF(NSnMe3)]2 (Cp‘ = C5Me4Et (3), C5H4Me (4)) are obtained in high yield by reaction of N(SnMe3)3 with (η5-C5Me4Et)TiF3 and (η5-C5H4Me)TiF3, respectively. Complex 3 has been characterized by X-ray diffraction. (MeAlNMes)4 (Mes = 2,4,6-trimethylphenyl) reacts as a transamination reagent with 4 equiv of (η5-C5H4Me)2TiF2 to provide [(η5-C5H4Me)TiF(NMes)]2 (5) in low yield.