1. Polish
Academy of Sciences, Institute of Physical Chemistry, Kasprzaka
44/52, 01-224 Warsaw, Poland
2. Faculty
of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
3. Institute
of Chemistry, Organic Chemistry, Martin-Luther-University Halle-Wittenberg, Kurt-Mothes
Str. 2, D-06120 Halle, Germany