The preparation and characterization of uns-cis-(ethylene-diamine-N,N'-di-3-propionato)(N-alkylethylenediamines)cobalt(III) complexes

Abstract

Three octahedral cobalt(III) complexes of the general formula uns-cis-[Co(eddp)(R- en)]Cl.2H2O, where eddp = the tetradentate ONNO-type ligand ethylenediamine-N,N'-di-3-propionate and R-en = a bidentate NN-type ligand, either N-methyl, N-ethyl or N-isopropylethylenediamine. The complexes were prepared by the reaction of sodium uns-cis- (ethylenediamine-N,N'-di-3-propionato)(carbonato)cobaltate(III)dihydrate with the corresponding diamine. They were isolated chromatographically and characterized by elemental analysis, infrared and electronic absorption spectroscopy.

Keywords

• cobalt(iii) complexes
• ethylenediamine-n,n'-di-3-propionic acid
• n-alkylethylenediamines