Synthesis of novel termetallic isopropoxides

Abstract

Novel termetallic isopropoxides are reported which may be represented by the general formulae: [(Pr i O) 3M(μ-OPr i ) 2Be(μ-OPr i ) 2Al(OPr i ) 2], [(Pr i O) 2M(μ-OPr i ) 2Be(μ-OPr i ) 2Al(OPr i ) 2] 2 [where M = Ti(IV), Zr(IV) and Hf(IV)] and [(Pr i O) 4M(μ-OPr i ) 2Be(μ-OPr i ) 2Al(OPr i ) 2] [where M = Nb(V) and Ta(V)]. Attempts to synthesize derivatives with the general formula, [(Pr i O) 7M 2(μ-OPr i ) 2Be(μ-OPr i ) 2Al(OPr i ) 2] [where M = Ti(IV), Zr(IV) or Hf(IV)], were unsuccessful and in all such cases a mixture of M(OPr i ) 4 and [(Pr i O) 3M(μ-OPr i ) 2Be(μ-OPr i ) 2Al(OPr i ) 2] was obtained. All these derivatives are soluble in common organic solvents and with the exception of titanium(IV) derivatives, they can be volatilised without noticeable disproportionation. These products have been characterized by elemental analyses, molecular weights, IR, 1H NMR and (in representative cases) mass spectral studies also.