1. Institute of Chemistry, Department of Inorganic Chemistry, Faculty of Science, P. J. Šafárik University, Moyzesova 11, 041 54 Košice, Slovak Republic, Institute of Physics, Centre of Low-Temperature Physics of Slovak Academy of Sciences and P. J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovak Republic, Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, Prague, Czech Republic, Institute for Low-Temperature Physics and Engineering, Lenin Avenue 47, 310164...