1. Department
of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74074, United States
2. Chemistry
Department, Augsburg College, Minneapolis, Minnesota 55454, United States
3. Department
of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
4. Department
of Chemistry, University of Maryland-Baltimore County, Baltimore, Maryland 21250, United States
5. Department
of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
6. Department
of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States