1. Inorganic Chemistry Department, Taras Shevchenko National University of Kyiv, Volodimirska Street 64, Kyiv 01033, Ukraine
2. Institute of Organic Chemistry, Murmanska Street 5, Kyiv 02660, Ukraine
3. Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
4. Physikalisches Institut, Universität Freiburg, Hermann-Herder-Strasse 3, D-79104 Freiburg, Germany
5. Departement für Chemie und Biochemie, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland