1. Department
of Chemistry, Minnesota Supercomputing Institute, and Chemical Theory
Center, University of Minnesota, 207 Pleasant Street Southeast, Minneapolis, Minnesota 55455-0431, United States
2. Department
of Chemistry, University of California, Berkeley, California 94720, United States
3. Materials
Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California 94720, United States
4. Department
of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455-0431, United States