1. Contribution from the Photochemistry Center of the Russian Academy of Sciences, Novatorov str. 7a, 117421 Moscow, Russia, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii prosp. 31, Moscow, GSP-1, 117907, Russia, Chemistry Department, University of Durham, South Road, Durham, U.K. DH1 3LE, Engler-Bunte-Institut, Universität Karlsruhe (TH), Richard-Willstär-Allee 5, 76128 Karlsruhe, Germany, and Department of Chemistry, The Florida State University, Tallahassee...