1. Department
of Chemistry, Missouri University of Science and Technology, 400 W.
11th Street, Rolla, Missouri 65401, United States
2. Department
of Chemistry, Wesleyan University, 52 Lawn Avenue, Middletown, Connecticut 06459, United States
3. School
of Natural and Social Sciences, State University of New York-Purchase College, 735 Anderson Hill Road, Purchase, New York 10577, United States
4. Department
of Chemistry, University of Texas Rio Grande Valley, Brownsville, Texas 78520, United States