4+2 Cycloadducts Between Enantiopure Tetramathyl-BEDT-TTF and Ortho-Chloranil: Conformational Issues in the Solid State
Résumé
The unexpected formation, in electrocrystallization experiments, and structural characterization of enantiopure [4+2] cycloadducts between the enantiopure donors tetramethyl-bis(ethylenedithio)-tetrathiafulvalene (TMBEDT-TTF) as (R,R,R,R) and (S,S,S,S) enantiomers and ortho-chloranil are described. Single crystal X-ray analysis reveals the presence of axial and equatorial methyl groups within the same molecule in the solid state, and the establishment of intermolecular hydrogen bonds of Cl center dot center dot center dot H3Ceq type.