1. Laboratory
of Theoretical and Computational Chemistry, Institute of Theoretical
Chemistry, Jilin University, Changchun 130023, PR China
2. Department of Chemistry & Biochemistry, California State University, Northridge, California 91330-8262, United States
3. Beijing Computational Science Research Center, Beijing 100193, PR China
4. Department
of Physics and Astronomy, University of California, Irvine, California 92697, United States