1. Faculty of Chemistry, University of Warsaw, Pasteur 1, 02093 Warsaw (Poland), Fax: (+48) 22‐5540801
2. Interdisciplinary Centre for Mathematical and Computational Modelling, University of Warsaw, Pawińskiego 5a, 02106 Warsaw (Poland)
3. Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30060 Cracow (Poland)
4. Department of Inorganic Chemistry and Technology, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana (Slovenia)