Zur Konstitution von Bis-(phenanthrolin)-kobalt(II)-Komplexen

On Bis(phenanthroline) cobalt(II) Complexes Spectrophotometric investigations of Co(phen)₂X₂] complexes in the IR and UV/VIS region are described. The results of this investigations show cis octahedral arrangement of the ligands. From the v₁- and v₃-transitions of the electronic spectra the LF parameters B and D_q are calculated and from this the two electron transition v₂ is estimated. Co(phen)₂X₂] complexes show symmetry equilibria between octahedral and tetrahedral forms in solutions by reason of complex disproportionation reactions. The green form of the chloride complex could be isolated and identificated as Co(phen)Cl₂].