139. [4+2] Cycloadducts between enantiopuretetramethyl-BEDT-TTF and ortho-chloranil: conformational issues in the solid state
     Flavia Pop, Jérôme Lacour, Narcis Avarvari
     Rev. Roum. Chim. 2012, 57, 457-462

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···H3Ceq type.

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