1. State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 (P. R. China), Fax: (+86) 25‐8331‐4502
2. Department of Chemistry and biology Graduate School of Science and Engineering, Ehime University, Bunkyo‐cho 2‐5, Matsuyama, 790‐8577 (Japan), Fax: (+81) 743‐72‐6042
3. Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980–8578 (Japan), Fax: (+81) 22‐795‐7719
4. Department of Chemistry, University of Western Ontario, London, Ontario, N6 A 5B7 (Canada)
5. Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Katahira‐2–1–1, Aobaku, Sendai 980–8577 (Japan)