1. Laboratory Physico Chemistry of the Solid State, Department of Chemistry, Faculty of Sciences of Sfax, Sfax University, POBOX 1171, 3000 Sfax, Tunisia
2. The University of Western Australia, School of Molecular Sciences, 35 Stirling Highway, Crawley, Perth, Western Australia 6009, Australia
3. Department of Chemistry, College of Sciences and Arts Turaif, Northern Border University, Arar, Saudi Arabia
4. Institute of Physics, Faculty of Science, P. J. Šafárik University in Košice, SK-041 54 Košice, Slovakia
5. Department of Inorganic Chemistry, Faculty of Science, P. J. Šafárik University, Košice SK-041 54, Slovakia
6. Departamento de Química Física, Facultad de Farmacia, Universidad de Sevilla, E-41012 Sevilla, Spain