Oxo fluorides of titanium and vanadium. Preparation and crystal structures of [Cp*TiF(.mu.-O)]4 and OVF2N:PPh3

Abstract

The reaction of Cp * TiF 3 (Cp * =C 5 Me 5 ) (1) with O(SnBu 3 ) 2 affords the eight-membered ring compound [Cp * TiF-(μ-O)] 4 (2) with elimination of Bu 3 SnF. This is the first example of an organometallic oxo fluoride of group 4 of the periodic table. The molecular structure of 2 has been determined by X-ray crystallography. At shows that the eight-membered ring is almost planar. The reaction of OVF 3 with Ph 3 P=NSiMe 3 yields OVF 2 N=PPh 3 ), which can be treated again with Ph 3 P=NSiMe 3 to give OVF(N=PPh 3 ) 2