Abstract
The absorption spectra of aqueous solutions of following cobalt complexes were determined: [Co(phen)3]Cl3, [Co(phen)3]Cl2, Co(phen)2Cl2, Co(phen)Cl2. Some correlations between the structures of the compounds and the absorption spectra were discussed. Absorption curves of trisphenanthroline complexes of Fe(II), Fe(III), Ni and Zn were also shown for the reference.
