Affiliation: | 1. Department of Organic Chemistry, The Arrhenius Laboratory, Stockholm University, 106 91 Stockholm (Sweden), Fax: (+46)?8‐154908;2. Department of Theoretical Chemistry, The Royal Institute of Technology, ALBANOVA, SE‐106 91 Stockholm (Sweden);3. Department of Structural Chemistry, The Arrhenius Laboratory, Stockholm University, 106 91 Stockholm (Sweden) |