Preparation and characterization of some cobalt (II)‎ complexes containing mixed ligands (salicylaldehyde thiosemicarbazone and carboxylic acids)‎

Abstract EN

Preparation and characterization of new cobalt (II) complexes with mixed ligands including salicylaldehyde thiosemicarbazone-STH2 and carboxylic acid-AH2 {salicylic acid-SH2 or anthranilic acid-AnH2 or phthalic acid-PH2} have been studied.

The resulted complexes were characterized using different physico-chemical methods from which the general formulaes [Co2(AH2)2(STH2)2(NO3)2](NO3)2 or [Co2(AH2)2(STH2)2Xn] have been suggested in neutral medium giving either cationic or neutral complexes .

Whereas , in basic medium the formula [Co2(AH)2(STH)2] has been proposed {where X = CO3 2- or CH3CO2 - , n = 2 or 4} .The study suggested that the complexes had octahedral geometries forming dimer (binuclear complexes).