Transition metal complexes of amidinourea and related ligands, part 3. Mixed ligand complexes of cobalt(III) containing biguanide, O-methyl-l-amidinourea and some bidentate ON and NN donor ligands

Abstract

New cobalt(III) complexes of general formula [Co(AA)(bigH)2 ]X3 and [Co(amidinourea)(MAUH)2 ]X3 where AA = amidinourea,N-phenylsalicylideneimine, bigH = biguanide, MAUH =O-methyl-l-amidinourea, X = 0.5 [SO4]2−, CI−, Br− or 0.33 [Co(NO2)6 ]3− have been synthesized and characterized. Conductance measurements (aqueous solution) show [Co(amidinourea)(bigH)2]Cl3 and [Co(N-phem,lsalicylideneimine)(bigH)2]CI3 to be triunivalent.