1. Department of Physics and Astronomy University of Nebraska Lincoln NE 68588‐0299 USA
2. Department of Theoretical Chemistry Faculty of Chemistry Jagiellonian University Krakow 30‐060 Poland
3. Department of Chemistry University of Buffalo Buffalo NY 14260‐3000 USA
4. Advanced Light Source Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
5. CNRS Univ. Bordeaux ICMCB UPR 9048 F‐33600 Pessac France
6. Université de Strasbourg CNRS CHIMIE UMR 7177 Laboratoire de Chimie de Coordination 4 rue Blaise Pascal 67081 Strasbourg France
7. University of Strasbourg CNRS IPCMS UMR 7504 23 rue du Loess 67034 Strasbourg France
8. Physikalisches Institut Universität Bayreuth 95440 Bayreuth Germany