Intermolecular -CH3...O2N-contacts in two polymorphic modifications of
(1E)-N '-[(E)-2-cyano-1-(dimethylamino)-2-nitrovinyl]-N,N-dimethylethanimidamide
Tafeenko VA, Chernyshev VV, Yatsenko AV, Makarov VA, Sonneveld EJ, Peschar R, Schenk H
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE 59: 492-497 Part 4 AUG 2003

Abstract:
The title compound was synthesized and isolated in two crystal modifications. The structure of the orthorhombic modification was determined by the X-ray powder diffraction method and the structure of the monoclinic modification was determined using the X-ray single-crystal diffraction technique. The molecules in both polymorphs are E, E isomers. Intermolecular H3C...NO2 contacts and their role in the formation of the polymorphic modifications are analyzed.