1. Institute
of Theoretical and Computational Chemistry, College of Chemistry and
Molecular Engineering, Beijing National Laboratory for Molecular Sciences, Peking University, Beijing 100871, China
2. Department
of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
3. School
of Physics, Peking University, Beijing 100871, China
4. Beijing
National Laboratory for Molecular Sciences, State Key Laboratory of
Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China