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. Fujian College, University of Chinese Academy of Sciences, Fuzhou 350002, P. R. China
4. College of Chemistry, Fuzhou University, Fuzhou 350108, P. R. China