1. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China
2. University of Chinese Academy of Sciences, Beijing 100049, P. R. China
3. Division of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
4. Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, P. R. China