1. Center for Catalysis, Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
2. Department
of Physics and the National High Magnetic Field Laboratory, University of Florida, Gainesville, Florida 32611-8440, United States
3. Institute
of Physics, Faculty of Science, P.J. Šafárik University, 04154 Košice, Slovakia
4. Laboratoire
de Chimie de Biologie des Métaux, UMR 5249, Université Joseph Fourier, Grenoble-1, CNRS-CEA, 17 Rue des Martyrs, 38054 Grenoble Cedex 9, France