Studies of 4-Diethylenetriaminemonoacetatocobalt(III) Complexes. I. The Preparation and Identification of 4-Diethylenetriaminemonoacetatocobalt(III) Complexes with Ethylenediamine, Oxalate Ion, or Acetylacetonate Ion as the Additional Ligand

The fac(N)- and mer(N)-isomers of 4-diethylenetriaminemonoacetatocobalt(III) complexes with ethylenediamine, the oxalate ion, or the acetylacetonate ion as the additional ligand have been obtained by means of reactions between chloro(4-diethylenetriaminemonoacetato)aquocobalt(III) chloride and the bidentates under different conditions. The geometrical configuration of each isomer has been identified by means of the PMR spectra and the electronic absorption spectra. The methine hydrogen in the acetylacetonato complexes has been replaced with bromine, and the resulting complexes have also been characterized.