1. Institut des Sciences
et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), Valais Wallis, CH-1951 Sion, Switzerland
2. Department of Chemistry QB3Mass Spectrometry Facility, University of California, Berkeley, Berkeley, California 94720, United States
3. Swiss-Norwegian
Beamlines (SNBL), European Synchrotron Radiation Facility (ESRF), BP 220, 38042 Grenoble, Cedex 9, France
4. Laboratory of Crystallography, Swiss Federal Institute of Technology, BSP-Dorigny, CH-1015 Lausanne, Switzerland