Spectral studies of iron(III) complexes of substituted thiosemicarbazones of 2-acetylpyridine

Abstract

Iron(III) complexes of four substituted thiosemicarbazones of 2-acetylpyridine of general. formula [FeL2]ClO4 (where L is a deprotonated ligand) have been synthesised and characterised by elemental analyses, magnetic susceptibility measurements in the polycrystalline state at room temperature, i.r. spectra, electronic spectra and e.s.r. spectra recorded in polycrystalline state, in methanol solution at room temperature and at 77 K. All the complexes are 1:1 electrolytes. The ligands coordinate via the pyridine nitrogen, imine nitrogen and thione sulphur. E.s.r. spectra and with magnetic studies suggest a spin-paired configuration for the iron(III) complexes.