1. Theoretical and Physical Chemistry Institute; National Hellenic Research Foundation; 48 Vassileos Constantinou Avenue 116 35 Athens Greece
2. División de Química Orgánica Instituto de Bioingeniería; Universidad Miguel Hernández; Avda. de la Universidad s/n 03203 Elche Spain
3. Division of Applied Chemistry; Graduate School of Engineering; Osaka University, Suita; Osaka 565-0871 Japan
4. Department of Chemistry and Nano Science; Ewha Womans University; Seoul 120-750 Korea
5. Faculty of Science and Technology; Meijo University, SENTAN, Japan Science and Technology Agency (JST), Nagoya; Aichi 468-8502 Japan