1. State Key Laboratory for Structural Chemistry of Unstable and Stable Species Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P.R. China
2. University of Chinese Academy of Sciences Beijing 100049 P.R. China
3. Beijing National Laboratory for Molecular Sciences and CAS Research/Education Centre of Excellence in Molecular Sciences Beijing 100190 P.R. China
4. Wilhelm-Ostwald Institut für Physikalische und Theoretische Chemie Universität Leipzig Linnéstrasse 2 04103 Leipzig Germany
5. Fritz-Haber-Institut der Max-Planck-Gesellschaft Faradayweg 4–6 14195 Berlin Germany