Synthesis and characterization of novel tri-and tetra metallic isopropoxides of later "3d" metals

Abstract

A novel series of monomeric and generally volatile polymetallic isopropoxides of the types [Al(O-i-Pr)₄]M[Ga(O-i-Pr)₄], [M'(O-i-Pr)₄]M[Zr₂(O-i-Pr)₉], [M"(O-i-Pr)₆]M[Zr₂(O-i-Pr)₉], [M'(O-i-Pr)₄]M[M"(O-i-pr)₆], [Al(O-i-Pr)₄]Fe[Zr₂(O-i-Pr)₉], [[Al(O-i-Pr)₄]Fe[Zr₂(O-i-Pr)₉]₂], [FeCl[Al(O-i-Pr)4][Zr₂(O-i-Pr)₉]] and [Fe[Al(O-i-Pr)₄][Zr₂(O-i-Pr)₉][M"(O-i-Pr)₆]] [where M = Mn(II), Fe(II), Co(II), Ni(II); M' = Al(III) or Ga(III); M"= Nb(V) or Ta(V)] has been synthesized by the reaction of bi- or tri-metallic chloride isopropoxides with a potassium isopropoxy-metallate derivative in an appropriate molar ratio. All these complexes have been characterized by elemental analysis, spectroscopic, magnetic and molecular weight measurements.