Tungsten complexes derived from O–H and C–H bond cleavage reactions of bis(2–hydroxyphenyl)phenylamine, PhN(o–C6H4OH)2: Mononuclear and dinuclear aryloxide derivatives which exhibit bidentate, tridentate and tetradentate coordination modes

INOR 97

Bryte V. Kelly and Gerard Parkin, parkin@columbia.edu. Department of Chemistry, Columbia University, 3000 Broadway, New York, NY 10027

The phenylimino-bridged diphenol PhN(C6H4OH)2 reacts with W(PMe3)4(CH2PMe2)H to yield a variety of mononuclear and dinuclear complexes that include W(PMe3)4[(OC6H3)N(Ph)(C6H4OH)]H2, {W(PMe3)4H2}2[(OC6H3)2NPh], W(PMe3)3[(OC6H4)2NPh]H2, W(PMe3)3[(OC6H4)2N(C6H4)]H, and W(PMe3)2[(OC6H4)2NPh]2 via O–H and C–H bond activation reactions.  Structural characterization of these compounds by X–ray diffraction demonstrates that the derived alkoxide ligand is structurally flexible and can adopt bidentate, tridentate and tetradentate coordination modes.