The reaction of triphenylbismuth, hexafluoroacetylacetone (Hhfac) and 1,1,1,5,5,5-hexafluoropentane-2,2,4,4-tetraol (H4hfpt) results in a new bismuth(III) mixed-ligand tetramer, [Bi4(hfpt)2(hfac)4] (1). Complex 1 has been crystallized from solution in a form of its THF adduct. The crystal structure of 1 is comprised of four [Bi(hfac)] units bridged by two hfpt ligands with each oxygen atom of the latter linking two bismuth atoms. It was found that upon heating the tetraolate ligand undergoes a cleavage of the two C–O bonds effectively becoming a source of both hfac- and oxo-groups. A mild thermolysis of 1 in the presence of Bi(hfac)3 leads to a remarkable oxo-diketonate cluster, Bi9(μ3-O)7(hfac)13. An application of new complex for the synthesis of polymetallic oxo-diketonates that can be used as single-source precursors for the formation of advanced oxide and oxofluoride materials will be discussed.
Back to Inorganic Chemistry Poster Session I
Back to The 33rd Northeast Regional Meeting (July 14-17, 2005)