Titanium(IV) imido complexes of 1,3,5-trialkyl-1,3,5-triazacyclohexanes

Reactions of the imido complex Ti(NBut)Cl-2(py)(3) (py = pyridine) with 1,3,5-trialkyl-1,3,5-triazacyclohexanes (R(3)tach) produce the corresponding imido complexes TiCl2(NBut)(R(3)tach) (R = Et, Bu-t). The new complexes have been characterized by n.m.r. spectroscopy and, for the R = Bu-t case, by X-ray diffraction studies. The absence of a C-3 upsilon axis of symmetry for the new complexes allowed complete and unequivocal assignment of their H-1 n.m.r. spectra by consideration of proton-proton coupling and nuclear Overhauser erects.