title: Hydrogen-bonded supramolecular structures of three related 4-(5-nitro-2-furyl)-1,4-dihydropyridines.
abstract: In ethyl 5-cyano-2,6-dimethyl-4-(5-nitro-2-furyl)-1,4-dihydropyridine-3-carboxylate, C15H15N3O5, the molecules are linked into chains by a single N-H...O hydrogen bond. The molecules in diethyl 2,6-dimethyl-4-(5-nitro-2-furyl)-1,4-dihydropyridine-3,5-dicarboxylate, C17H20N2O7, are linked by a combination of one N-H...O hydrogen bond and two C-H...O hydrogen bonds into sheets built from equal numbers of R(2)(2)(17) and R(4)(4)(18) rings. In 2,6-dimethyl-4-(5-nitro-2-furyl)-1,4-dihydropyridine-3,5-dicarbonitrile, C13H10N4O3, the molecules are linked by a combination of a three-centre N-H...(O)2 hydrogen bond and two independent two-centre C-H...O hydrogen bonds into complex sheets containing four types of ring.
authors.affiliation: Departamento de Didáctica de las Ciencias, Facultad de Humanidades y Ciencias de la Educación (Edif. D-2), Campus Las Lagunillas, Universidad de Jaén, 23071 Jaén, Spain.
authors.forename: Antonio
authors.initials: A
authors.lastname: Quesada
authors.forename: Jacqueline
authors.initials: J
authors.lastname: Argüello
authors.forename: Juan A
authors.initials: JA
authors.lastname: Squella
authors.forename: James L
authors.initials: JL
authors.lastname: Wardell
authors.forename: John N
authors.initials: JN
authors.lastname: Low
authors.forename: Christopher
authors.initials: C
authors.lastname: Glidewell