title: (Z)-1,2-Dichloro-1,2-bis-(3-chloro-quinoxalin-2-yl)ethene.
abstract: The title compound, C(18)H(8)Cl(4)N(4), exists in a cis configuration with respect to the bridging C=C bond. The two essentially planar quinoxaline ring systems [maximum deviations = 0.012 (1) and 0.022 (1) Å] are inclined at an angle of 59.84 (3). In the crystal, adjacent mol-ecules are linked into chains propagating along [001] via inter-molecular C-H⋯N hydrogen bonds. Weak inter-molecular π-π [centroid-centroid distance = 3.6029 (7)°] and C-H⋯π inter-actions are also observed.
authors.forename: Hoong-Kun
authors.initials: HK
authors.lastname: Fun
authors.forename: Jia Hao
authors.initials: JH
authors.lastname: Goh
authors.forename: Annada C
authors.initials: AC
authors.lastname: Maity
authors.forename: Shyamaprosad
authors.initials: S
authors.lastname: Goswami