Synthesis and Characterization of Some Mixed-Ligand Cyanonitrosyl {CrNO}5Chelates of Chromium(I) with 8-Hydroxyquinolinesulphonamides

Abstract

Abstract New mixed-ligand cyanonitrosyl {CrNO}5 chelates of chromium(I) of the type [cr (NO) (CN)2 (L-L) (H2O)] have been synthesized by the interaction of the potassium pentacyano-nitrosylchromate (I) monohydrate with 8-hydroxyquinolinesulpho-namides (L-L), viz., 8-hydroxyquinoline-4- (4′ -tolyl)sulphonamide, 8-hydroxyquinoline-4- (phenyl) sulphonamide, 5-iodo-8-hydroxyquinoline-4-(4′ -tolyl)sulphonamide, 5, 7-diiodo-8-hydroxyquinoline-4-(4′ -tolyl)-sulphonamide, 5, 7-diiodo-8-hydroxyquinoline-4- (3′ -ethoxyphenyl) -sulphonamide, 5, 7-diiodo-8-hydroxyquinoline-4- (3′ -methoxyphenyl) -sulphonamide, 5, 7-dichloro-2-methyl-8-hydroxyquinoline-4-(3′ -methoxy-phenyl)sulphonamide or 5, 7-dichloro-2-methyl-8-hydroxyquinoline-4-(3′-ethoxyphenyl)sulphonamide in aqueous acetic acid medium. The resulting compounds, which have been characterized through elemental analyses, electrical conductances, magnetic measurements, thermo-gravimetric analyses, electron spin resonance and infra-red spectral studies, contain chrom...