Synthesis and characterization of some hetero(bi- and tri-)-metallic isopropoxides of magnesium(II)

449-453Isopropoxometallate derivatives of magnesium of the types, CIMg{Zr2(OPri)9},CIMg{M(OPri)n} (M=Al, n=4; M=Nb, n=6) Mg{Zr2(OPri)9}2.and Mg{M(OPri)n}2 (M=Al, n=4; M=Nb, n=6) have been synthesized by the reactions of MgCl2 with an appropriate alkoxometallate in the required molar ratio. Reactions of CIMg{Zr2(OPri)9} with potassium isopropoxide, potassium isopropoxoaluminate, or -niobate in benzene yield (PriO)Mg{Zr2(OPri)9}, {Al(OPri)4}Mg{Zr2(OPri)9}, and {Nb(OPri)6}Mg{Zr2(OPri)9} respectively. All these derivatives have been characterized by elemental analyses, spectroscopic (IR and NMR) studies and ebullioscopic molecular weight determinations