Reduction of Bu 2 t C=O by H 3 MNMe 3 (M = A1 or Ga): Product Association via Bridging Alkyloxides (M = Al,Ga) and Hydrides (M = Al)

Abstract

Treatment of di-t-butyl ketone with excess H₃MNMe₃, M = Al or Ga, yields dimeric [H₂M{μ-OC(H)Bu^t₂}]₂ which for M = A1 association prevails, in the solid via two symmetrical bridging hydrides between single aluminium centers from different dimers such that the metal centers are either four or five coordinate, as distorted tetrahedra or square pyramids.