1. TRIUMF and Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1.
2. Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2.
3. Department of Physics, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1.
4. Department of Chemistry and Supercomputing Institute, University of Minnesota, Minneapolis, MN 55455–0431, USA.
5. Department of Chemistry, Northwestern University, Evanston, IL 60208–3113, USA.
6. Chemical and Material Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352, USA.
7. Department of Chemistry, Washington State University, Pullman, WA 99164–4630, USA.