1. Institute
of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
2. Institute
of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
3. Mulliken
Center for Theoretical Chemistry, Institute of Physical and Theoretical
Chemistry, University of Bonn, Beringstr. 4, 53115 Bonn, Germany