Efficient synthesis of a vinylogue TTF derivative bearing four cyanoethylsulfanyl substituents, 9 is described. Cyclic voltammetry establishes that the novel compound shows good donor properties and a reduced on-site coulombic repulsion. Single crystal X-ray structure determination shows that the molecule has a planar structure of the conjugated moiety with a slipped π−π stacking organization in the crystal parallel to the crystallographic a axis. EPR, UV–vis and IR spectroscopies show that 9 forms a charge transfer complex with TCNQF4. EPR studies allow for the recognition of the 3:2 stoichiometry ratio between donor and acceptor while IR spectroscopy gave the estimation of the ionicity of the complex, which was found to be 0.31.
Salzillo T., Crivillers N., Mas-Torrent M., Wurst K., Veciana J., Rovira C. (2019). Synthesis of a vinylogue tetrathiafulvalene derivative and study of its charge transfer complex with TCNQF4. SYNTHETIC METALS, 247, 144-150 [10.1016/j.synthmet.2018.11.021].
Synthesis of a vinylogue tetrathiafulvalene derivative and study of its charge transfer complex with TCNQF4
Salzillo T.;
2019
Abstract
Efficient synthesis of a vinylogue TTF derivative bearing four cyanoethylsulfanyl substituents, 9 is described. Cyclic voltammetry establishes that the novel compound shows good donor properties and a reduced on-site coulombic repulsion. Single crystal X-ray structure determination shows that the molecule has a planar structure of the conjugated moiety with a slipped π−π stacking organization in the crystal parallel to the crystallographic a axis. EPR, UV–vis and IR spectroscopies show that 9 forms a charge transfer complex with TCNQF4. EPR studies allow for the recognition of the 3:2 stoichiometry ratio between donor and acceptor while IR spectroscopy gave the estimation of the ionicity of the complex, which was found to be 0.31.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
