Synthesis and characterization of some mixed ligand heterocyclic compounds of aluminium(III) containing acetylacetone and glycol moieties

Bohra, Rakesh ; Dhammani, Anita ; Sharma, Rajnish K. ; Mehrotra, Ram C. (2001) Synthesis and characterization of some mixed ligand heterocyclic compounds of aluminium(III) containing acetylacetone and glycol moieties Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry, 31 (4). pp. 681-693. ISSN 1553-3174

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Related URL: http://dx.doi.org/10.1081/SIM-100104796

Abstract

The reaction of [Al(CH3COCHCOCH3)2(Opr-i)]2 with glycols (HO-G-OH) in 1:2 molar ratio in refluxing benzene yields H[(CH3COCHCOCH3)2Al(O-G-O)][where G=G1=-C(CH3)2CH2CH(CH3)- or G2=-C(CH3)2C(CH3)2-]. These derivatives are soluble in benzene, chloroform and dimethyl sulfoxide and are monomeric in chloroform. Further reaction of H[(CH3COCHCOCH3)2Al(O-G-O)Al(O-G-O) with alkali metal methoxide (MOCH3) in 1:1 molar ratio in methanol yields the bimetallic heterocyclic derivatives of the type [(CH3OH)M] [(CH3COCHCOCH3)2] Al(O-G-O) (where M = Li, Na and K). Also these are soluble in methanol and dimethyl sulfoxide and are monomeric. These complexes show slight ionic character in 0.001M methanol solution. All derivatives have been characterized by elemental analyses, IR, 1H, 13C and 27Al NMR spectral studies. The 27Al NMR spectra show the presence of octahedrally coordinated aluminium atoms.

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