1. Department of Applied Chemical Science, Jordan University of Science and Technology, 22110 Irbid, Jordan
2. Department of Chemistry, CICECO, University of Aveiro, Campus de Santiago, 3810–193 Aveiro, Portugal Fax: +351‐234‐370‐084
3. Anorganisch‐chemisches Institut der Technischen Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
4. Instituto de Tecnologia Química e Biológica da Universidade Nova de Lisboa, Quinta do Marquês, EAN, Apt. 127, 2781‐901 Oeiras, Portugal