1. Key Laboratory of Cluster Science of Ministry of Education
2. School of Chemistry
3. Beijing Institute of Technology
4. 100081 Beijing
5. China
6. Japan Atomic Energy Agency
7. Tokyo University
8. Kashiwa
9. Japan
10. Institut de Química Computacional i Catàlisi and Departament de Química
11. Universitat de Girona
12. 17071 Girona
13. Spain