1. Department of Chemistry, Franklin & Marshall College, Lancaster, Pennsylvania 17604-3003, United States
2. Department of Chemistry, State University of New York at Stony Brook, Stony
Brook, New York 11794, United States
3. Los Alamos National Laboratory, Chemistry Division, Group PCS, Mail Stop
J567, Los Alamos, New Mexico 87545, United States
4. Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States