1. Department of Chemistry, University of Oregon, Eugene, Oregon 97401-3753, United
States
2. Department of Natural
Sciences, Oregon Institute of Technology, Klamath Falls, Oregon
97601, United States
3. Institute Laue-Langevin (ILL), F-38042 Grenoble, France
4. Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439,
United States
5. Institute
of Physics, Humboldt University, 10099
Berlin, Germany