Syntheses and pyrolytic studies of salicylate derivatives of heterotrinucleic [AlIII-SnII-BIII]-μ-oxoisopropoxide
New salicylate derivatives of heteronucleic-μ-oxoisopropoxide [SnO2AlB(OPri)4] have been synthesized by the thermal condensation of μ-oxoisopropoxide and methyl/ethyl/phenyl/phenyl ethyl salicylates in different molar ratios (1:1-1:2) yielding the compounds of the type [SnO2AlB(OPri)4-n(RSAL)n] (where n is 1-2 and RSAL = salicylate anion), respectively. The complexes have been characterized by elemental, spectral (IR, 1H, 13C, 27Al, 119Sn and 11B NMR), thermal and molecular weight measurement. The complexes are hydrolysed by hydrothermally assisted sol-gel technique and gave hydrolyzed product. Thermal studies of these products are made which favor the formation of multicomponent oxides. The studies reveal that salicylate derivatives are polymeric in nature and low susceptible to hydrolysis as compared to parent compound and may prove excellent precursors for the mixed metal oxides.
KEY WORDS: Heteronucleic-μ-oxoalkoxides, Aluminium, Tin, Boron, Salicylates, TG analysis
Bull. Chem. Soc. Ethiop. 2013, 27(3), 377-386.