1. School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, United KIngdom
2. Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France
3. Hylleraas Centre for Quantum Molecular Sciences, Department of Chemistry, University of Oslo, P.O.
Box 1033 Blindern, N-0315 Oslo, Norway