1. Department of Solid State Physics, Faculty of Physics, Ivan Franko National University of Lviv, Dragomanova Str. 50, 79005 Lviv, Ukraine
2. Department of General and Coordination Chemistry and Crystallography, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University in Lublin, Maria Curie-Skłodowska Sq. 2, 20-031 Lublin, Poland