1. State Key Laboratory of Theoretical and Computational Chemistry Institute of Theoretical Chemistry Jilin University Changchun 130023 People's Republic of China
2. Departments of Chemistry and Material Sciences Johns Hopkins University Baltimore Maryland MD 21218 USA
3. Department of Chemistry University of Maryland at College Park College Park MD 20742 USA
4. Department of Chemistry and Physics McNeese State University Lake Charles LA 70609 USA
5. Department of Physics and Engineering West Chester University West Chester PA 19383 USA