1. Department of Chemistry, Chemical Process and Technology; Togliatti State University; 14 Belorusskaya St. Togliatti 445667 Russian Federation
2. Department of Organic, Bioorganic and Medicinal Chemistry; Samara State University; 1 Akademica Pavlova St. Samara 443011 Russian Federation
3. Department of General and Theoretical Physics; Togliatti State University; 14 Belorusskaya St. Togliatti 445667 Russian Federation
4. NMR laboratory, A. N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 28 Vavilov St. Moscow B-334 119991 Russian Federation