Research Into Complex Formation of Cobalt(ii) and Nickel (Ii) With 2-Hydroxy-5-Nitrothiophenol and Diphenylguanidine

Abstract

The interaction of cobalt (II) and nickel (II) with 2-hydroxy-5-nitrothiophenol (HNTPh) and diphenylguanidine (DPG) produces chloroform-extracted mixed-ligand complexes (MLC) with the ratio Me (II): GNTF: DPG = 1: 2: 2. Conditions for extraction-photometric determination of cobalt (II) nickel (II) are revealed. It found that MLC are formed in a weakly acid medium (pH opt