1. Faculty of Chemistry Wrocław University of Science and Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland
2. Department of Chemistry, Faculty of Science University of Maragheh P.O. Box 55136–83111 Maragheh Iran
3. Departamento de Química Inorgánica, Facultad de Farmacia Universidad de Santiago de Compostela E-15782 Santiago de Compostela Spain
4. Department of Chemical and Pharmaceutical Sciences University of Trieste Via L. Giorgieri 1 34127 Trieste Italy
5. Department of Chemistry and Biochemistry Utah State University Logan Utah 84322-0300 United States