Titanium imido complexes with 1,3,5-triazacyclohexane ligands: syntheses, solution dynamics and solid state structures

Abstract

The multi-gram scale syntheses of the first 1,3,5-triazacyclohexane imido complexes [Ti(NR)(R₃^′tach)Cl₂] (R=Bu^t, C₆H₃Pr₂ⁱ-2,6; R′=Me, Bu^t) are described together with the X-ray structures of [Ti(NBu^t)(Me₃tach)Cl₂] and [Ti(NBu^t)(Bu₃^ttach)Cl₂]; the complexes of Me₃tach exhibit dynamic NMR behaviour ia an unusual trigonal twist of the facially coordinated Me₃tach ligand (Me₃tach and Bu₃^ttach=1,3,5-trimethyl- and tri-tert-butyl-1,3,5-triazacyclohexane, respectively).