Methanolysis of tetraphenylborate (BPh4−) as a reaction unit in halotris(2,4-pentadianato) complexes of Zr(iv) and Hf(iv)

Abstract

The complexes {(C₅H₈O₂)₂Zr[(OCH₃)₂B(C₆H₅)₂]₂·½C₁₂H₁₀} (M = Zr (1) or Hf (2)) have been obtained from the reaction of [M(acac)₃Cl] with sodium tetraphenylborate (BPh₄⁻) in methanol. Crystal structures show 8-coordinate complexes with two 2,4-pentanedionato groups and two dimethoxydiphenylborate groups each coordinated through methoxy groups to the metal centre.