1. Centre
for Theoretical and Computational Chemistry (CTCC) and The Department
of Chemistry, University of Oslo, P.O. Box 1033, Blindern, 0315 Oslo, Norway
2. Institut
Charles Gerhardt, UMR 5253 CNRS-UM-ENSCM, Université de Montpellier, Place Eugène Bataillon, 34095
Cedex 5 Montpellier, France
3. Univ Lyon, Université Lyon1, CNRS, INSA,
CPE-Lyon, ICBMS, UMR 5246, 43, Bd du 11 Novembre 1918, 69622 Cedex Villeurbanne, France