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

Preparation and Properties of Tri- and Tetrahalogenocuprates(ll) with Ethanolammonium as a Cation

Z. Biela

Department of Inorganic Chemistry, Faculty of Chemical Technology, Slovak Technical University, SK-812 37 Bratislava

Abstract: Compounds of the general formula (EA)₂CuCl_xBr_4-x and (EA)₂Cu₂Cl_xBr_6-x (EA = ethanolammonium) were prepared by crystallization from ethanol solutions. Based on spectral data and diffraction powder patterns it has been found that (EA)₂Cu₂Cl_xBr_6-x are isostructural and possess the same molecular structure. The energies of (EA)₂CuCl_xBr_4-x depend on x: for (EA)₂CuBr₄ (v = 9000 cm^-1),the d-d energy corresponds to a distorted tetrahedral structure, while for all other compounds (v = 12600 cm^-1; almost-equal-to 10000 cm^-1 shoulder) it corresponds to a distorted octahedral structure. (EA)₂CuBr₄ is not isostructural with any of other tetrahalogenocuprates(II).

Full paper in Portable Document Format: 475a303.pdf

Chemical Papers 47 (5) 303–305 (1993)