1. Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
2. Department of Chemistry, University of Illinois Chicago, Chicago, Illinois 60607, United States
3. Education Division, American Chemical Society, Washington, DC 20036, United States
4. Department of Chemistry, University of Nebraska Omaha, Omaha, Nebraska 68182, United States
5. Department of Chemistry and Physics, Southeast Missouri State University, Cape Girardeau, Missouri 63701, United States
6. Department of Chemistry, Sam Houston State University, Huntsville, Texas 77340, United States
7. Department of Chemistry, University of Texas Austin, Austin, Texas 78712, United States