title: Tetrathiafulvalene-based azine ligands for anion and metal cation coordination.
abstract: The synthesis and full characterization of two tetrathiafulvalene-appended azine ligands, namely 2-([2,2'-bi(1,3-dithiolylidene)]-4-yl)-6-((2,4-dinitrophenyl)hydrazono)methyl)pyridine (L1) and 5-([2,2'-bi(1,3-dithiolylidene)]-4-yl)-2-((2,4-dinitrophenyl)hydrazono)methyl)pyridine (L2) are described. The crystal structure of ligand L1 indicates that the ligand is completely planar with the presence of a strong intramolecular N3-H3···O1 hydrogen bonding. Titration experiments with inorganic anions showed that both ligands are suitable candidates for the sensing of fluoride anions. Ligand L2 was reacted with a Re(I) cation to yield the corresponding rhenium tricarbonyl complex 3. In the crystal structure of the newly prepared electroactive rhenium complex the TTF is neutral and the rhenium cation is hexacoordinated. The electrochemical behavior of the three compounds indicates that they are promising for the construction of crystalline radical cation salts.
authors.affiliation: Laboratoire MOLTECH Anjou, Université d'Angers, UFR Sciences, UMR 6200, CNRS, Bât. K, 2 Bd. Lavoisier, 49045 Angers Cedex, France ; Laboratoire de Physico-chimie de l'état solide, Université de Sfax, Route de Soukra; Km 4; BP: 802, 3038, Sfax, Tunisia.
authors.forename: Awatef
authors.initials: A
authors.lastname: Ayadi
authors.affiliation: MEM, High School of Technology (ESTM), University, Moulay Ismail, Meknès, Morocco.
authors.forename: Aziz
authors.initials: A
authors.lastname: El Alamy
authors.affiliation: Laboratoire MOLTECH Anjou, Université d'Angers, UFR Sciences, UMR 6200, CNRS, Bât. K, 2 Bd. Lavoisier, 49045 Angers Cedex, France.
authors.forename: Olivier
authors.initials: O
authors.lastname: Alévêque
authors.affiliation: Laboratoire MOLTECH Anjou, Université d'Angers, UFR Sciences, UMR 6200, CNRS, Bât. K, 2 Bd. Lavoisier, 49045 Angers Cedex, France.
authors.forename: Magali
authors.initials: M
authors.lastname: Allain
authors.affiliation: Laboratoire de Physico-chimie de l'état solide, Université de Sfax, Route de Soukra; Km 4; BP: 802, 3038, Sfax, Tunisia.
authors.forename: Nabil
authors.initials: N
authors.lastname: Zouari
authors.affiliation: MEM, High School of Technology (ESTM), University, Moulay Ismail, Meknès, Morocco.
authors.forename: Mohammed
authors.initials: M
authors.lastname: Bouachrine
authors.affiliation: Laboratoire MOLTECH Anjou, Université d'Angers, UFR Sciences, UMR 6200, CNRS, Bât. K, 2 Bd. Lavoisier, 49045 Angers Cedex, France.
authors.forename: Abdelkrim
authors.initials: A
authors.lastname: El-Ghayoury
keywords: X-ray; azine ligand; fluoride sensing; rhenium; tetrathiafulvalene