title: Ethyl 2,6-bis-(4-chloro-phen-yl)-1-iso-cyano-4-oxo-cyclo-hexa-necarboxyl-ate.
abstract: In the title compound, C22H19Cl2NO3, the central six-membered ring is in a twist-boat conformation. The two aryl groups are in equatorial positions, trans to each other and with a dihedral angle of 77.50 (2)° between them. One of the least hindered -CH2- groups and one of the aryl-substituted C atoms, with its axial H atom, are in the flagpole positions. The eth-oxy-carbonyl group is in an equatorial position and is cis to the second aryl group. In the crystal, molecules are linked via weak C-H⋯O hydrogen bonds, forming chains along [010].
authors.affiliation: College of Agricultural Sciences, Jilin University, Changchun, Jilin Province 130062, People's Republic of China.
authors.forename: Dawei
authors.initials: D
authors.lastname: Zhang
authors.affiliation: College of Agricultural Sciences, Jilin University, Changchun, Jilin Province 130062, People's Republic of China.
authors.forename: Peng
authors.initials: P
authors.lastname: Yang
authors.affiliation: College of Agricultural Sciences, Jilin University, Changchun, Jilin Province 130062, People's Republic of China.
authors.forename: Wei
authors.initials: W
authors.lastname: Liu
authors.affiliation: College of Life Sciences and Biotechnology, Heilongjiang Bayi Agricultural University, Heilongjiang Province 163319, People's Republic of China.
authors.forename: Jing
authors.initials: J
authors.lastname: Li
keywords: crystal structure