1. Contribution from the Department of Chemistry, Universitair Centrum Antwerpen, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium, Department of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland, Institute of Physics, St. Petersburg University, Peterhof Campus, 198904 St. Petersburg, Russia, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, 166 10 Prague 6, Czech Republic, J. Heyrovský Institute of Physical Chemistry, Academy of Sciences...