A general route to sandwich and half-sandwich titanium imido complexes: X-ray structure of [Ti(η4-Me8taa)(NBut)](Me4taa = tetramethyldibenzotetraaza[14]annulene)

Abstract

The readily available complex [Ti(NBu^t)Cl₂(Bu^tpy)₂](Bu^tpy = 4-tert-butylpyridine) is a useful precursor to a range of sandwich- and half-sandwich titanium imido derivatives including [Ti(η-C₉H₄Me₃)(NBu^t)Cl(Bu^tpy)](C₉H₄Me₃= trimethylindenyl), [Ti(η-C₅H₅)₂(NBu^t)(Bu^tpy)], [Ti(dmbpz)(NBu^t)Cl(Bu^tpy)][dmbpz = tris(3,5-dimethylpyrazolyl) borate] and [Ti(η⁴-Me_ntaa)(NBu^t)]{n= 4 or 8; Me_{(4 or 8)}taa =(tetra- or octa-)methyl-dibenzotetraaza[14]annulene respectively}.