title: Crystal structure of 1,7,8,9-tetra-chloro-4-(2-fluoro-benz-yl)-10,10-dimeth-oxy-4-aza-tri-cyclo-[5.2.1.0(2,6)]dec-8-ene-3,5-dione.
abstract: In the title compound, C17H12Cl4FNO4, the configuration of the cyclo-alkene skeleton is endo,cis. The benzene ring is twisted by 71.01 (11)° from the attached pyrrolidine ring. In the crystal, one of the methine groups of the fused-ring system forms a weak C-H⋯O hydrogen bond. The other methine groups participates in a C-H⋯F inter-action to the same adjacent mol-ecule. Together, these generate [010] chains.
authors.affiliation: Shanghai Institute of Pharmaceutical Industry, Shanghai 200040, People's Republic of China.
authors.forename: Jia-Liang
authors.initials: JL
authors.lastname: Zhong
authors.affiliation: Shanghai Institute of Pharmaceutical Industry, Shanghai 200040, People's Republic of China.
authors.forename: Jia-Wei
authors.initials: JW
authors.lastname: Hou
authors.affiliation: Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, People's Republic of China.
authors.forename: Li-Hong
authors.initials: LH
authors.lastname: Liu
authors.affiliation: Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, People's Republic of China.
authors.forename: He
authors.initials: H
authors.lastname: Liu
keywords: C—H⋯F inter­action; biochemical activity; crystal structure; hydrogen bonding; tri­cyclo­[5,2,1,02,6]dec-8-ene-3,5-dione