1. Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
2. Department of Chemistry, Missouri University of Science and Technology, University of Missouri, Rolla, Missouri 65409-0010, United States
3. Department of Physics, B5, University of Liège, B-4000 Sart Tilman, Belgium
4. Department of Physics and the National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, United States
5. Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States