1. Department 2-Chemistry/BiologyInstitute of Inorganic Chemistry and CrystallographyUniversity of Bremen Leobener Str. 3 and 7 28359 Bremen Germany
2. Current address: Division of PhysicsFaculty of Pure and Applied SciencesUniversity of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8571 Japan
3. School of Molecular SciencesUniversity of Western Australia 35 Stirling Highway Perth WA 6009 Australia
4. Current address: Interdisciplinary Nanoscience Center - INANO-KemiAarhus University Langelandsgade 140 8000 Aarhus C Denmark
5. SPring-8Japan Synchrotron Radiation Research Institute 1-1-1 Kouto Sayo-cho Sayo-gun, Hyogo 679-5198 Japan