1. Key Laboratory of Polyoxometalate Science of the Ministry of Education College of Chemistry Northeast Normal University Changchun P. R. China
2. Department of Chemistry University of South Florida Tampa FL 33620 USA
3. Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry Ministry of Education College of Chemistry Tianjin Normal University Tianjin P. R. China
4. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun P. R. China