1. State Key Laboratory of Molecular Reaction Dynamics and Center for Theoretical and Computational Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China and Center for Advanced Chemical Physics and 2011 Frontier Center for Quantum Science and Technology, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, China
2. Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, USA
3. Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, USA