1. Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland
2. Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
3. Institut für Anorganische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Straße 2, 24118 Kiel, Germany