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Published on: March 24, 2018
Intermolecular interactions and charge transfer in the 2:1 tetrathiafulvalene bromanil complex, (TTF)2-BA
Pilar García-Orduña1, Slimane Dahaoui, Claude Lecomte
1Laboratoire de Cristallographie, Résonance Magnétique et Modélizations UMR CNRS-UHP, Institut Jean Barriol, Université Henri Poincaré, BP, Vandoeuvre-les-Nancy, France.
Abstract:
The crystal structure of the 2:1 charge-transfer complex of tetrathiafulvalene [2,2'-bis(1,3-dithiolylidene)] and bromanil (tetrabromo-1,4-benzoquinone) [(TTF)(2)-BA, (C(6)H(4)S(4))(2)-C(6)Br(4)O(2)] has been determined by X-ray diffraction at room temperature, 100 and 25 K. No structural phase transition occurs in the temperature range studied. The crystal is made of TTF-BA-TTF sandwich trimers. A charge-transfer estimation between donor and acceptor (0.2 e) molecules is proposed in comparison to the molecular geometries of TTF-BA and TTF and BA isolated molecules. Displacement parameters of the molecules have been modeled with the TLS formalism.
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