Tin(II) isopropoxometallates of the types XSn{Al(OPr(i))4}, XSn{Zr2(OP
ri)9}, XSn{M(OPri)6}, {Al(OPri)4}Sn{Zr2(OPri)9} and {Nb(OPri)6}Sn{Ta(O
Pri)6} (where X = Cl, OPri/OBut; M = Nb/Ta) have been synthesized and
characterized by elemental analyses, molecular weight measurements and
multinuclear (H-1, C-13, Al-27 and Sn-119) NMR studies.