ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Oxidation and reduction of copper(II) complexes, resulting from ligand interaction

J. Gažo

Slovak Technical University, Bratislava

Abstract: The oxidn. and redn. changes of Cu(II) complexes resulting from ligand interaction were described. Because of the difference in the 2 ligands (I and II) in the trans position, σ-bonds (of lower polarity metal(II) → X) and donor π-bonds with the central atom are formed. There is an increased tendency of ligand I to be bound by the donor π-bond with the central atom. At the same time there is a tendency of ligand II to be bound by the σ-bond with the central atom, with the shift of the bond electrons towards the central atom. Thus, the ligand II may be oxidized (Cl- to Cl0) and the central atom reduced (Cu(II) to Cu(I)). These results can be applied in other complexes with a similar geometrical ligand arrangement in the sq., octahedral, tetragonal-pyramidal, and bipyramidal forms and with a corresponding electron structure of the valence cover of the central atom.

Full paper in Portable Document Format: 1911a826.pdf (in Slovak)

Chemical Papers 19 (11) 826–832 (1965)