Synthesis, magnetic and spectral studies of iron(III), cobalt(II, III), nickel(II), copper(II) and zinc(II) complexes of 4-formylantipyrine N(4)-antipyrinylthiosemicarbazone

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Abstract

Summary

2-Formylpyridine N(4)-antipyrinylthiosemicarbazone and its metal complexes have been synthesized and characterized. Elemental analyses, molar conductivities, magnetic measurements and spectral (i.e., i.r., electronic, n.m.r. and e.s.r.) studies have been used to characterize the complexes. The i.r. spectra show that the thiosemicarbazones behave as bidentate or tridentate ligands either in the thione or thiolato form. Ligand field parameters have been calculated and the proposed stereochemistries are based on the various physical and spectral methods.

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