Co (II)‎ and Cd (II)‎ mixed-ligands complexes prepared from N'-(4-methylsulfanyl-benzoyl)‎-hydrazine carbodithioic acid methyl ester ; synthesis and physico-chemical characterisation

Abstract EN

This work is based on the synthesis of Cobalt (II) and Cadmium(II) mixed-ligands compounds obtained from the reaction of N'- (4-methylsulfanyl-benzoyl)-hydrazine carbodithioic acid methyl ester as a ligand and using ethylendiamine (en), 2, 2'-bipyridine (bipy) or 1,10-phenanthroline (phen) as a co-ligand.

The synthesis of ligand (HL) was based on multi-steps synthetic procedure.

The reaction of 4-methylsulfanyl-benzoyl chloride with hydrazine gave 4-methylsulfanyl-benzoic acid hydrazide.

This compound was reacted with carbon disulfide and potassium hydroxide in methanol to yield N'-(4-methylsulfanyl-benzoyl)-hydrazine potassium thiocarbamate, which upon reaction with methyl iodide resulted in the formation of the ligand.

A range of physico-chemical techniques was used to characterise the new ligand and its mixed-ligand metal complexes.

These include; IR, UV-Vis, 1H, 13C NMR, elemental micro analyses, magnetic susceptibility, atomic absorption, chloride content, and melting point.

The physico-chemical analyses indicated the formation of complexes of the general formula [M (L) 2 X], (X = ethylene diamine (en), 2,2` bipyridine`(bipy) and 1,10 phenanthroline` (phen)), in which the coordination sphere about metal centre is octahedral.