Group 6 metal complexes with a hemilabile tridentate xantsil ligand and facile insertion of tBuCN into a W–Si bond [xantsil = (9,9-dimethylxanthene-4,5-diyl)bis(dimethylsilyl)]

Abstract

The synthesis and characterization of tungsten and molybdenum complexes of the xanthene-based bis(silyl) ligand (xantsil) with a κ³(Si,Si,O) coordination mode are reported, where an insertion of ^tBuCN into a tungsten–silicon bond leads to formation of an η²-iminoacyl complex.