1. Department of Chemistry, University
of Oslo, P.O. Box 1033 Blindern, 0315 Oslo, Norway
2. SINTEF Materials and Chemistry, P.O. Box 124,
Blindern, 0314 Oslo, Norway
3. Centre for Theoretical and Computational Chemistry (CTCC), Department
of Chemistry, University of Oslo, P.O. Box 1033 Blindern, 0315 Oslo,
Norway