Synthesis and characterization of some unique heterocyclic derivatives containing aluminium (III) atoms in 4-and 6-coordination states-3. Reaction of bis (β- diketonato) aluminium(III)-di-μ-isopropoxo di-isopropoxo aluminium(III) with 2-mercaptoethanol and 2,2'-thiodiethanol

Abstract

Reactions of bis (β-diketonato) aluminium (III)-di-μ-isopropoxo di-isopropoxo aluminium(III), [(β-diketo)₂Al(μ-OPrⁱ)₂Al(OPrⁱ) ₂], with 2-mercaptoethanol, [HO(CH₂)₂ SH], and 2,2'-thiodiethanol, [HO(CH₂)₂S(CH₂)₂OH], in 1:1 stoichiometry have resulted in the synthesis of [(β-diketo)₂Al(μ-OPriⁱ) ₂ [(βdiketo)₂Al(μ-OPrⁱ)₂Al {O(CH₂)₂S}]_n and [(β-diketo)₂Al (μ-OPrⁱ)₂Al{O(CH₂)₂S (CH₂)₂O}]ⁿ[(β-diketo)₂Al (μ-OPr_i)₂]_n, respectively (where n = 1 for ethylacetoacetato and n = 2 for acetylacetonato). These are soluble in common organic solvents. Suitable structures based on elemental analysis, molecular weight measurements, IR and NMR (¹H, ¹³C and ²⁷Al) spectral studies have been proposed. ²⁷Al spectra show the presence of both octahedrally and tetrahedrally coordinated aluminium sites.