title: Diethyl 4-(biphenyl-4-yl)-2,6-dimethyl-1,4-di-hydro-pyridine-3,5-di-carboxyl-ate.
abstract: The title compound, C25H27NO4, has a flattened di-hydro-pyridine ring. The benzene and phenyl rings are synclinal to one another, forming a dihedral angle of 49.82 (8)°; the axis of the biphenyl rings makes an 81.05 (9)° angle to the plane of the di-hydro-pyridine ring. In the crystal, N-H⋯O hydrogen bonds link the mol-ecules into chain motifs running along the a-axis direction. The chains are cross-linked by C-H⋯O inter-actions, forming sheet motifs running slightly off the (110) plane, together with an intermolecular interaction between head-to tail biphenyl groups, thus making the whole crystal packing a three-dimensional network. Intra-molecular C-H⋯O hydrogen bonds are also observed.
authors.affiliation: Department of Biomedical and Pharmaceutical Sciences, The University of Montana, 32 Campus Drive, Missoula, MT 59812, USA.
authors.forename: Scott A
authors.initials: SA
authors.lastname: Steiger
authors.affiliation: Department of Chemistry, Ithaca College, 953 Danby Road, Ithaca, NY 14850, USA.
authors.forename: Anthony J
authors.initials: AJ
authors.lastname: Monacelli
authors.affiliation: Department of Chemistry, Ithaca College, 953 Danby Road, Ithaca, NY 14850, USA.
authors.forename: Chun
authors.initials: C
authors.lastname: Li
authors.affiliation: Department of Chemistry, Ithaca College, 953 Danby Road, Ithaca, NY 14850, USA.
authors.forename: Janet L
authors.initials: JL
authors.lastname: Hunting
authors.affiliation: Department of Biomedical and Pharmaceutical Sciences, The University of Montana, 32 Campus Drive, Missoula, MT 59812, USA.
authors.forename: Nicholas R
authors.initials: NR
authors.lastname: Natale