title: Dimethyl 6,6'-dicyano-2,2'-bipyridine-3,3'-dicarboxyl-ate.
abstract: In the title compound, C(16)H(10)N(4)O(4), the two pyridine rings are twisted by 44.41 (2)° and the ester groups form dihedral angles of 48.77 (4) and 45.75 (2)° with the corresponding pyridine rings. The crystal structure is stabilized by inter-molecular C-H⋯O hydrogen bonds and π-π stacking inter-actions between the pyridine rings [centroid-to-centroid distance 3.797 (2) Å].
authors.forename: Xiao
authors.initials: X
authors.lastname: He
authors.forename: Gui-Rong
authors.initials: GR
authors.lastname: Qu
authors.forename: Dongsheng
authors.initials: D
authors.lastname: Deng
authors.forename: Baoming
authors.initials: B
authors.lastname: Ji