Lewis Acid – Base Interactions Between Bis-π-cyclopentadienyl Tungsten and Molybdenum Dihydrides, Cp2MH2, and some Main Group III Moieties

Abstract

Combination of the Lewis bases Cp₂MH₂ (where M = W or Mo) with the Group III Lewis acids AlR₃ (where R = Me, Et, or Ph) and AlMe₂H has yielded a series of 1:1 complexes of the type Cp₂MH_2•AlR₃. A number of the complexes undergoes a slow elimination of hydrogen or alkane in benzene solution. Attempts to isolate mixed hydride adducts of the type, Cp₂MH₂•M′H₃ (where M′ = Al or Ga), were unsuccessful.