1. Department
of Chemistry, Wesleyan University, Hall-Atwater Laboratories, 52 Lawn Avenue, Middletown, Connecticut 06459, United States
2. School
of Natural and Social Sciences, Purchase College SUNY, 735 Anderson
Hill Road, Purchase, New
York 10577, United States
3. Department of Chemistry, Texas A & M University, College Station, Texas 77840, United States