Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Radical Cation Salts of Tetramethyltetrathiafulvalene (TM-TTF) and Tetramethyltetraselenafulvalene (TM-TSF) with Chlorocyananilate-Based Anions

Abstract : Electrocrystallization of tetramethyltetrathiafulvalene (TM-TTF) and tetramethyltetraselenafulvalene (TM-TSF) with chlorocyananilate monoanion or/and tris(chlorocyananilato)ferrate(III) in THF/DCM solvent mixtures yielded a salt formulated as [TM-TTF]4[K(HClCNAn)4] (1) with the former and π–d hybrid systems, formulated as [TM-TTF]5[Fe(ClCNAn)3]·2CH2Cl2 (2) and [TM-TSF]3[Fe(ClCNAn)3]·0.5CH2Cl·2.5H2O (3), respectively, with the latter. Compound 1 shows segregation of TM-TTF donor molecules and K(HClCNAn)4 anionic clusters in the bc plane. The donor molecules are present as mixed-valence dimers and show a β′ packing arrangement. Compounds 2 and 3 consist of hybrid organic/inorganic structures with no segregation of [Fe(ClCNAn)3]3– anionic complexes and organic TM-TTF/TM-TSF donors. In the structure of compound 3, TM-TSF dimers are trapped between anilate units of metal complexes of opposite chirality. Furthermore, tetrameric donor motifs and solvent molecules of crystallization complete the structure. Single-crystal conductivity measurements on compounds 1 and 2 show semiconducting behavior with room-temperature conductivity values of 5 × 10–5 and 2 × 10–4 10 S cm–1 and activation energies of 1960 and 1900 K, respectively. Under high pressure, compound 2 remains a semiconductor, yet its room-temperature conductivity value strongly increases up to 0.2 S cm–1 at 9.8 GPa.
Type de document :
Article dans une revue
Liste complète des métadonnées

https://hal.univ-angers.fr/hal-03030836
Contributeur : Narcis Avarvari <>
Soumis le : lundi 30 novembre 2020 - 11:44:22
Dernière modification le : vendredi 15 janvier 2021 - 16:22:03
Archivage à long terme le : : lundi 1 mars 2021 - 18:46:56

Fichiers

 Accès restreint
Fichier visible le : 2022-11-30

Connectez-vous pour demander l'accès au fichier

Identifiants

Citation

Suchithra Ashoka Sahadevan, Alexandre Abhervé, Noemi Monni, Pascale Auban-Senzier, Hengbo Cui, et al.. Radical Cation Salts of Tetramethyltetrathiafulvalene (TM-TTF) and Tetramethyltetraselenafulvalene (TM-TSF) with Chlorocyananilate-Based Anions. Crystal Growth & Design, American Chemical Society, 2020, 20 (10), pp.6777-6786. ⟨10.1021/acs.cgd.0c00873⟩. ⟨hal-03030836⟩

Partager

Métriques

Consultations de la notice

19