1. Department
of Chemistry and Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, United States
2. Department
of Chemistry, Georgia Southern University, Statesboro, Georgia 30460, United States
3. NASA Ames Research Center, Moffett Field, California 94035-1000, United States
4. Department
of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
5. Department
of Chemistry, Harvard University, Cambridge, Massachusetts 02138, United States
6. Department
of Chemistry, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States