1. A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow 119991, Russia
2. Physical Department, M.V. Lomonosov Moscow State University, Moscow, 1199911, Russia
3. N.S. Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, Moscow 119991, Russia
4. A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 117393, Russia