1. Department of Chemistry, McGill University, 801 Sherbrooke Street, West. Montreal,
QC H3A 2K6, Canada
2. Department
of Chemistry, Trinity College, Hartford,
Connecticut 06106-3100,
United States
3. NIST Center
for Neutron Research, National Institute of Standards and Technology, 100
Bureau Drive, MS 6102, Gaithersburg, Maryland 20899-6102, United States
4. Department of Materials Science
and Engineering, University of Maryland, College Park, Maryland 20742-2115, United States