1. Institute of Molecular and Biological Chemistry, Swiss Federal Institute of Technology, BCH 1402, CH‐1015 Lausanne, Switzerland
2. Department of Chemistry, University of Minnesota Duluth, Duluth, MN, 55812‐3020, USA
3. Institute of Crystallography, BSP, University of Lausanne, CH‐1015 Lausanne, Switzerland
4. Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA 93106, USA
5. Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, CH‐1211 Geneva 4, Switzerland