The preparation and characterization of uns-cis-(ethylenediamine-N,N '-di-3-propionato)(N-alkylethylene diamines)cobalt(III) complexes

Abstract

Three octahedral cobalt(III) complexes of the general formula uns-cis-[Co(eddp)(R-en)]Cl . H2O, 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-iso-propylethylenediamine. The complexes were prepared by the reaction of sodium uns-cis-(ethylenediamine-N,N'-di-3-propionato)(carbonato)cobalt(III)dihydrate with the corresponding diamine. They were isolated chromatographically and characterized by elemental analysis, infrared and electronic absorption spectroscopy.

U ovom radu su sintetisana i okarakterisana tri oktaedarska kobalt(III) kompleksa opšte formule uns-cis-[Co(eddp) (R-en)]Cl∙2H2O, gde je eddp tetradentatni ONNO- tip liganda etilendiamin-N,N'-di-3-propionat, a R-en bidentatni NN ligand, N-metil, N-etil ili N-izopropiletilendidamin. Kompleksi su sintetisani polazeći od uns-cis- natrijum(etilendiamin-N,N'-di-3-propionato)(karbonato)kobaltat(III)-dihidrata i odgovarajućih diamina, izolovani hromatografski i okarakterisani elementalnom analizom, infracrvenom i elektronsko-apsorpcionom spektroskopijom.