1. Department of Chemistry, The University of the South, Sewanee, Tennessee 22903, United States
2. Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, United States
3. C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26505, United States
4. Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
5. Department of Chemistry, Illinois State University, Normal, Illinois 61790, United States