Affiliation: | 1. Department of Chemistry, University of Florida, Gainesville, FL 32611‐7200 (USA), Fax: (+1)?352‐392‐8757;2. Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Mail Stop 2‐400, Berkeley, CA 94720 (USA);3. Institut Laboratoire Louis Néel, CNRS & Università J. Fourier, BP‐166, Grenoble, Cedex 9 (France) |