1. Department
of Chemistry and the James Franck Institute, University of Chicago, Chicago, Illinois 60637, United States
2. Institute
of Materials, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
3. Combustion
Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
4. Cherry
L. Emerson Center for Scientific Computation, Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States