1. Department of Organic Chemistry, Moscow State Lomonosov University, Lelinsky Gory, Moscow 119899, Russia
2. Department of Organic and Biological Chemistry, Astrakhan' State Technical University, Tatischev str. 16, Astrakhan' 414025, Russia
3. Department of lnorganic and Analytical Chemistry, University of Palermo, viale delle Scienze 2, Parco d'Orleans, Palermo I-90128, Italy