1. Department of Chemistry, Missouri State University, 901 South National Avenue, Temple Hall 456, Springfield, Missouri 65897, United States
2. Department of Inorganic and Analytical Chemistry, University of Szeged, P.O. Box 440, H-6701 Szeged, Hungary
3. Departamento de Química Inorgánica, Universidad de Valencia, C/Dr. Moliner, 50, Burjasot, 46100 Valencia, Spain
4. Department of Chemistry, Middle Tennessee State University, Davis Science Building, Office 113, Murfreesboro, Tennessee 37132, United States