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

Cyanatocopper(II) complexes with organic ligands. XII. Absorption spectra of the cyanatocopper(II) complexes with heterocyclic nitrogen-containing ligands in various solvents

M. Hvastijová, J. Kohout, and J. Gažo

Slovak Tech. Univ., Bratislava

Abstract:  The absorption spectra of cyanato-copper(II) complexes of the type Cu(NCO)₂L₂ and Cu(NCO)₂L (L is methylsubstituted pyridine or a ligand of the quinoline or the isoquinoline group) were measured in methanol, acetone, Af,A7-dimethylformamide, dioxan, and chloroform, respectively. All the spectra show ligand field bands characteristic of distorted octahedral Cu(II) species. The complexes Cu(NCO)₂L₂ with L = ß- or γ-picoline and isoquinoline are completed in solutions by two molecules of the solvent in axial positions. The other complexes of this type split off one molecule L; these complexes as well as Cu(NCO)₂L are solvated by three molecules of the solvent (except for chloroform). The ligand field bands in the spectra of the complexes were investigated in the given solvents and their characteristic features are discussed.

Full paper in Portable Document Format: 282a188.pdf (in German)

Chemical Papers 28 (2) 188–195 (1974)