1. Department of Polymer Science, University of Ulm, Albert-Einstein-Allee 11, D-89069 Ulm, Germany; Nesmeyanov Institute of Organoelement Compounds, Vavilov Street 28, 119991 Moscow, Russia; Chemistry Department, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405; Physics Department, Moscow State University, 119992 Moscow, Russia; and Tver Technical University, 170026 Tver, Russia