1. Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
2. National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, United States
3. Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
4. Department of Biological, Physical and Health Sciences, Roosevelt University, Chicago, Illinois 60605, United States