1. Department of Chemistry and Biochemistry, Bloomsburg University of Pennsylvania, 400 East Second Street, Bloomsburg, Pennsylvania 17815, United States
2. Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
3. Department of Chemistry, Creighton University, 2500 California Plaza, Omaha, Nebraska 68178, United States