1. Department of Theoretical Chemistry and Department of Physical Chemistry and Electrochemistry, Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Krakow, Poland, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030, and Structure et Réactivité des Systèmes Moléculaires Complexes, BP 239, CNRS/Nancy Université, 54506 Vandoeuvre-lès-Nancy cedex, France