Acetates and acetate-complexes. Part 1. Preparation of acetato-complexes and conductimetric studies in the acetic anhydride solvent system

Abstract

Preparations using acetic anhydride as solvent are reported for B₂O(O₂CMe)₄, AlCl(O₂CMe)₄, [TiO(O₂CMe)₂]. Ti(O₂CMe)₄·2MeCO₂H, and M(O₂CMe)₄(M = Zr, Si, Ge, Sn, or Pb). Conductimetric titrations against potassium or tetramethylammonium acetate indicate the formation of [B₂O(O₂CMe)₅]^–, [B₂O(O₂CMe)₆]^2–, [M₂(0₂CMe)₉]^–, [M(O₂Me)₅]^–, and [M(0₂CMe)₆]^2–(M = Si. Ge, Sn. and Pb); the salts Na[B₂O(O₂CMe)₅], and K₂[M(O₂CMe)₆](M = Si, Ge, Sn, or Pb). K₂[Sn(O₂CMe)]·(MeCO)₂O, and [NMe₄][Sn(O₂CMe)₅] have been isolated. Evidence for the nature of the solvent system is discussed.