1. Department of Chemistry, University of North Texas, 1508 West Mulberry Street, Denton, Texas 76201, United States
2. Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
3. Department of Chemistry & Biochemistry, University of California San Diego, MC 0332, 9500 Gilman Drive, La Jolla, California 92093-0021, United States
4. Department of Chemistry, North Carolina State University, 2700 Stinson Drive, Raleigh, North Carolina 27607, United States
5. Department of Chemistry, Multani Mal Modi College, Patiala 147001, Punjab, India