1. Department
of Chemistry, University of North Dakota, 151 Cornell St., Stop 9024, Grand Forks, North Dakota 58202, United States
2. Department
of Chemistry and Biochemistry, South Dakota State University, Avera
Health Science Center 131, Brookings, South Dakota 57007, United States
3. Department of Chemistry and Applied Biological Sciences, South Dakota School of Mines & Technology, 501 E. Saint Joseph St., Rapid City, South Dakota 57701, United States