Crystal structure of diethyl 3-(3-chlorophenyl)-2,2-dicyanocyclopropane-1,1-dicarboxylate
In the racemic title compound, C17H15ClN2O4, which has been synthesized and the crystal structure of the solvent-free molecule determined, the angle between the planes of the benzene and cyclopropane rings is 54.29 (10)°. The molecular conformation is stabilized by two weak intramolecular C—H...Ocarboxylinteractions. In the crystal, C—H...O hydrogen bonds form centrosymmetric cyclicR22(10) dimers which are linked into chain substructures extending alongc. Further C—H...Nnitrilehydrogen bonding, including a centrosymmetric cyclicR22(14) association, link the chain substructures, forming a two-dimensional layered structure extending across the approximateabplane. No significant π–π or halogen–halogen intermolecular interactions are present in the crystal.