Synthesis and characterization of halogenocobalt(III) complexes of 3,8-dimethyl-5,6-benzo-4,7-diazadeca-3,7-diene-2,9-dione dioxime with substitute pyridines

Abstract

800-802Cobalt(III) complexes of the type [Co(DODOHbzo) (s-py)X]CIO4, where DODOHbzo = 3,8-dimethyl-5,6 benzo-4.7- diazadeca-3,7-diene-2,9-dione dioxime mono anion, s-py = a substituted pyridine, such as, nicotinamide, isonicotinamide, nicotinic acid or isonicotinic acid and X- = CI-, Br- or J-, have been synthesised and characterised by elemental analyses, conductivity studies, IR, 1H NMR and UV-visible spectral data. The IR evidence suggests that it is the pyridine nitrogen that is involved in the coordination with cobalt(III), leaving amide and carboxylic acid groups free