1. Institute of Theoretical Chemistry, College of Chemistry, Jilin University, Changchun 130023, P. R. China
2. College of Chemistry, National Institute for Advanced Materials, Renewable Energy Conversion and Storage Center (RECAST), Nankai University, 300350 Tianjin, China
3. Laboratory of Molecular Modeling and Design, State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian 116023, P. R. China