1. Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, Wrocław 50-383, Poland
2. Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 2 Okólna, Wrocław 50-422, Poland
3. Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wrocław University of Science and Technology, Wrocław 50-370, Poland