A series of titanium-pyrrolyl compounds, namely [Me2Si(C 5Me4)2]Ti(NC4H4)X (X = H, Me, Cl, NC4H4) and [Me2Si(C5Me 4)(C5Me3CH2)]Ti(NC4H 4) has been synthesized and structurally characterized by X-ray diffraction. Analysis of the TiNC4H4 bond lengths in these complexes indicates that pyrrolyl does not, by comparison to dialkylamido, act as an efficient π-donor ligand. The fulvene complex [Me2Si(C 5Me4)(C5Me3CH2)] Ti(NC4H4) is obtained via thermal elimination of CH 4 and H2 from [Me2Si(C5Me 4)2]Ti(NC4H4)Me and [Me 2Si(C5Me4)2]Ti(NC4H 4)H, respectively. The latter transformation is reversible, with [Me2Si(C5Me4)(C5Me 3CH2)]Ti(NC4H4) reacting with H 2 to give [Me2Si(C5Me4) 2]Ti(NC4H4)H at room temperature. In accord with this reversibility, treatment of [Me2Si(C5Me 4)2]Ti(NC4H4)H with D2 results in incorporation of deuterium into the hydride and one ring methyl group of each cyclopentadienyl ring of the [Me2Si(C5Me 4)2] ligand.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry