Hydrogen-bonded supramolecular structures of three related 4-(5-nitro-2-furyl)-1,4-dihydropyridines.
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.
Quesada
Antonio
A
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.
Argüello
Jacqueline
J
Squella
Juan A
JA
Wardell
James L
JL
Low
John N
JN
Glidewell
Christopher
C