1. Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany
2. Institut für Chemie, Technische Universität Berlin, Strasse des 17 Juni 135, 10623 Berlin, Germany
3. Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
4. JASRI Spring-8, 1-1-1 Kouto, Mikazuki-cho, Sayo-gun, Hyogo 679-5198, Japan
5. School of Chemical Sciences, University of Illinois, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
6. SETI Institute, Mountain View, California 94043, United States