Synthesis, characterisation, oxygenation and carbonylation of ruthenium(III) schiff base complexes

Taqui Khan, M. M. ; Khan, N. H. ; Kureshy, R. I. ; Boricha, A. B. ; Shaikh, Z. A. (1990) Synthesis, characterisation, oxygenation and carbonylation of ruthenium(III) schiff base complexes Inorganica Chimica Acta, 170 (2). pp. 213-223. ISSN 0020-1693

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/S0020-1693(00)80478-8

Abstract

Some ruthenium(III) Schiff base complexes of the type [RuLXY]n where L=Schiff base namely, bis(α-hydroxyacetophenone)-o-phenylenediimine (α-acetop.oph), bis(2-hydroxy-4-methoxyacetophenone) -o-phenylenediimine (4-MeOacetop.oph), bis(α-hydroxyacetophenone)ethylenediimine (α-acetop.en), bis(2-hydroxy-4-methoxyacetophenone)ethylenediimine (4-MeOacetop.en), bis(α-hydroxyacetophenone) propylenediimine (α-acetop.prop), bis(2-hydroxy- 4-methoxyacetophenone)propylendiimine (4-MeOacetop.prop), bis(a-hydroxyacetophenone)diethylenetriimine (α-acetop.dien), bis(2-hydroxy-4-methoxyacetophenone) diethylenetriimine (4-MeOacetop.dien), n=−1 when X=Y=Cl, n=0 when X=imidazole (Im), 2-methylimidazole (2-MeIm) and Y=Cl were synthesised and characterised by physicochemical methods. The reversible binding of molecular oxygen as well as carbon monoxide was carried out in DMF. The complexes show discrimination against the binding of CO over molecular oxygen as evinced by the values of KO2 and KCO in the complexes. The thermodynamic parameters ΔH°, ΔG°, ΔS° for the carbonylation and oxygenation reactions at 10, 25 and 40°C are evaluated.

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