1. Department
of Chemistry, University of Nebraska−Lincoln, Lincoln, Nebraska 68588, United States
2. Chemical
Biology Research Group, Institute of Organic Chemistry, Research Centre
for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok
krt. 2, H-1117 Budapest, Hungary
3. Department
of Physics and Astronomy, Theodore Jorgensen Hall, 855 N 16th St., University of Nebraska, Lincoln, Nebraska 68588-0299, United States
4. ChemMatCARS,
Center for Advanced Radiation Sources, The University of Chicago, 9700 South Cass Avenue, Argonne, Illinois 60439, United States