1. Key Laboratory of Polyoxometalate Science of the Ministry of Education
2. Faculty of Chemistry
3. Northeast Normal University
4. Changchun 130024
5. P. R. China
6. State Key Laboratory of Polymer Physics and Chemistry
7. Changchun Institute of Applied Chemistry
8. Chinese Academy of Sciences
9. Changchun 130022
10. Laboratory of Theoretical and Computational Chemistry
11. Institute of Theoretical Chemistry
12. Jilin University
13. Changchun 130023