1. Contribution from the Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium, Physical-Technical Institute, Kazan Branch RAS, Sibirsky Tract 10/7, 420029 Kazan, Russia, School of Chemistry, University of Exeter, Stocker Road, Exeter EX4 4QD, England, National Technical University of Ukraine, pr. Pobedi 37, 252056 Kiev, Ukraine, Institut für Physikalische Chemie, Technische Universität Darmstadt, Condensed Matter Group, Petersenstrasse 20, D-64287 Darmstadt,...