Synthesis and Characterization of Organoheterotrimetallic Dibutyl-[Sn(IV), Ti(IV), Al(III)]-μ-oxoisopropoxide and Its β-Diketonates

摘要

Thermal condensation of diburyl tin diacetate and aluminium isopropoxide in 1:1 molar ratio in refluxing xylene affords [f AcO)Bu2SnOAl (i-OPr)2] which on reaction with titanium isopropoxide in 1:1 molar ratio yields a new organoheterotrimetallic dibutyl [Sn(IV), Ti(IV), Ai(III)]-μ-oxoisopropoxide with continuous liberation of isopropyl acetate. The isopropoxy substitution reactions of μ-oxoisopropoxide compound with β-diketones in different molar ratios (1:1-1:2) gives compounds of the type [Bu2SnO2TiAl(i-OPr_(5-n)L_n] (where n is 1-2 and L = acetylacetonate/benzoylacetonate anion). The p-oxoisopropoxide compound has been characterized by elemental, spectral analysis (IR, ~1H, ~(13)C, ~(119)Sn and ~(27)Al NMR) and molecular weight measurement. The β-diketonates of [Bu2SnO2TiAl (i-OPr)5] have been characterized by elemental, liberated isopropanol and spectral analysis (IR, ~1H, ~(13)C NMR).