Acetates and acetato-complexes. Part 2. Spectroscopic studies

Abstract

The effect of different modes of co-ordination on the i.r. spectrum of the acetate ion is reviewed. Infrared and ¹H n.m.r. spectra of a series of metal acetates and acetato-complexes are reported. and the type of co-ordination identified: B₂O(O₂CMe)₄ and Na[B₂O(O₂CMe)₅] contain both bridging and unidentate acetate; Al(O₂CMe)₃ probably contains bridging acetate only: Si(O₂CMe)₄, Ge(O₂CMe)₄, K₂[Si(O₂CMe)₆], and K₂[Ge(O₂CMe)₅] contain only unidentate acetate: Zr(O₂CMe)₄ and Pb(O₂CMe)₄ contain only chelating acetate: K₂[Sn(O₂CMe)₆], K₂[Pb(O₂CMe)₆], and [NMe₄][Sn(OMe)₅] contain both chelating and unidentate acetate; and Sn(O₂CMe)₄ contains symmetrical and unsymmetrical chelating acetate.