Acta Chimica Slovaca (ACS) publishes papers on fundamental and applied aspects of chemistry, biochemistry, chemical technology, chemical engineering and process control, biotechnology and food technology. Welcome are also topics which include chemical aspects of materials, physical chemistry and chemical physics, analytical chemistry, macromolecular chemistry and biomedical engineering.

Bis(3-methylsalicylato)bis(picolinamide)copper(II) Complex — Preparation, Spectral Properties and Supposed Structure

Simona Matejová, Miroslava Puchoňová *, Dominika Hrindová, Vladimír Jorík, Milan Mazúr a, Dušan Valigura b

Department of Inorganic Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37, Bratislava, Slovakia
a Department of Physical Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37, Bratislava, Slovakia
b Department of Chemistry, University of SS Cyril and Methodius in Trnava, J. Herdu 2, 917 01 Trnava, Slovakia

E-mail: * miroslava.puchonova@stuba.sk

Abstract: Blue methylsalicylatocopper(II) complex with picolinamide Cu(3-Mesal)2(pnia)2 has been prepared and characterized by elemental analysis and spectral methods. Based on the infrared spectra, monodentate coordination of 3-methylsalicylate anion has been assumed and the coordination variability of the anion has been shown. By determination and refinement of the unit cell from powder diffraction data, the existence of a monomeric Cu(II) complex can be anticipated. EPR spectrum of the complex is in good agreement with these results. The g-factors fulfil the relation g|| > g┴ > 2.0023, which is consistent with the dx2 – y2 ground electronic state and indicates coordination sphere of distorted tetragonal symmetry {CuN2O2O2´} for the central copper(II) ions.

Keywords: picolinamide, powder diffraction analysis, copper(II) complex, spectral properties, EPR spectroscopy

Full paper in Portable Document Format: acs_0331.pdf

Acta Chimica Slovaca, Vol. 12, No. 1, 2019, pp. 97—102, DOI: 10.2478/acs-2019-0014