1. Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
2. Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
3. Department of Chemistry, The University of Jordan, Amman 11942, Jordan
4. Department of Chemistry, University of California Santa Barbara, Building 232, Santa Barbara, California 93106, United States