title: 6,7-Di-chloro-2,3-bis(pyridin-2-yl)quinox-aline.
abstract: The title compound, C18H10Cl2N4, synthesized by the condensation reaction between 4,5-di-chloro-benzene-1,2-di-amine and 1,2-di(pyridin-2-yl)ethane-1,2-dione in boiling acetic acid, has a nearly planar quinoxaline moiety [maximum deviation = 0.070 (1) Å] whose mean plane makes dihedral angles of 40.51 (2) and 39.29 (3)° with the pyridine rings. Within the unit cell, there are no classical hydrogen bonds. Molecules in the structure pack with π-π stacking contacts between the quinoxaline units and nearby pyridine rings with an intercentroid distance of 3.7676 (9) Å.
authors: Department of Chemistry & Biochemistry, Central Connecticut State University, New Britain, CT 06053, USA.
authors: Guy
authors: G
authors: Crundwell
authors: Department of Chemistry & Biochemistry, Central Connecticut State University, New Britain, CT 06053, USA.
authors: Neil M
authors: NM
authors: Glagovich
authors: Department of Chemistry & Biochemistry, Central Connecticut State University, New Britain, CT 06053, USA.
authors: Melissa E
authors: ME
authors: King
keywords: crystal structure; quinoxaline