Synthesis of bimetallic[Sn,A]-μ-oxoisopropoxyacetate and -μ-oxoisopropoxide and their acetylacetone and benzoylacetone derivatives

Bimetallic [Sn^IV,Al^III-μ-oxoisopropoxyacetate (Bu₂Sn(OAc)OAl(OⁱPr)₂] and bimetallic [Sn^IV,Al^III]-μ- oxoisopropoxide [Bu₂SnO₂Al₂(OⁱPr)₄] have been synthesized by thermal condensation of dibutyltin diacetate with aluminium isopropoxide in 1:1 and 1:2 molar ratio, respectively. Reactions of these compounds with acetylacetone and benzoylacetone in these molar ratios yielded compounds of the type [Bu₂Sn(OAc)OAl(OⁱPr)L], [Bu₂Sn(OAc)OAlL₂], [Bu₂SnO₂Al₂(OⁱPr)₃L] and [Bu₂SnO ₂Al₂(OⁱPr)₂L₂] (where L = acetylacetonate or benzoylacetonate anion). The μ-oxo compounds and their derivatives have been characterized by elemental analysis and spectroscopic techniques (IR, ¹H NMR, ¹³C NMR, ²⁷Al NMR and ¹¹⁹Sn NMR).