1. Institute of Theoretical and
Computational Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstraβe 1, 40225 Düsseldorf, Germany
2. Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12, 11 158 Belgrade,
Serbia
3. Department of Chemistry, Graduate
School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan