Cobalt(III)-Gemischtligandenkomplexe mit Ethylendiamin und Ethylendiamintetraacetat bzw. Diamincyclohexantriacetat

Mixed-ligand Complexes of Cobalt(III) with Ethylenediamine and Ethylenediamine Tetraacetate or Diaminecyclohexane Triacetate Ethylenediamine replaces two carboxyl groups of ethylenediamine tetraacetato cobaltate(III), Coedta^?, two remaining ones attached on different N atoms being coordinated each trans to other. This follows from the X-ray analysis of [Co(H₂edta)en]ClO₄ · 3 H₂O, preparation of which as well as the corresponding chloride is described. The cis(O)- and trans(O)-(hydrogen-1,2-diaminecyclohexane triacetato)ethylenediamine cobalt(III) perchlorates are synthesized and characterized by the IR, UV and visible spectra and the potentiometric titration.