1. Laboratory of Structural Organic Chemistry: Synthesis and Physico-Chemical Studies, Department of Chemistry, Faculty of Sciences of Tunis, University of Tunis El-Manar, Tunis, Tunisia
2. Laboratoire de RMN en Milieu Orienté, Université Paris-Sud 11, ICMMO, UMR CNRS 8182, France
3. Materials Chemistry Research Unit, Department of Chemistry, Faculty of Sciences and Techniques, UNA, Nouakchott, Mauritania