Cobalt (II) complexes of Diamino Diamide in Aqueous Solution

Abstract

An investigation of the interaction of Co(II) with N,N'-bis-(β-carbamoylethyl)
ethylenediamine (BCAN) has been carried out. The stability
constants as well as the distribution of solution complexes have been
determined by analytical potentiometry in 0.1 M KNO₃ at 30°C. Electronic
spectra of different complex species of the ligand have been measured in
aqueous solution under similar conditions. Based on the bond rearrangement
at the amide sites as well as the deprotonation of amide protons, the
structures of the Co(ll) complexes have been discussed.