title: Crystal structure of 2-chloro-1-(6-fluoro-3,4-di-hydro-2H-chromen-2-yl)ethanone.
abstract: In the title mol-ecule, C11H10ClFO2, the benzene ring, the F atom and the O atom of the di-hydro-pyran ring are essentially coplanar, with an r.m.s. deviation of 0.007 Å. The di-hydro-pyran ring is in a half-chair conformation. In the crystal, mol-ecules are linked by pairs of weak C-H⋯π hydrogen bonds, forming inversion dimers.
authors.affiliation: Changzhou Siyao Pharmacy Limited Company, Changzhou 213004, People's Republic of China.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Shen
authors.affiliation: Changzhou Siyao Pharmacy Limited Company, Changzhou 213004, People's Republic of China.
authors.forename: Qiu-Xia
authors.initials: QX
authors.lastname: Mao
authors.affiliation: Changzhou Siyao Pharmacy Limited Company, Changzhou 213004, People's Republic of China.
authors.forename: Ji-Long
authors.initials: JL
authors.lastname: Ge
authors.affiliation: Changzhou Siyao Pharmacy Limited Company, Changzhou 213004, People's Republic of China.
authors.forename: Yong-Rui
authors.initials: YR
authors.lastname: Tu
authors.affiliation: Changzhou Siyao Pharmacy Limited Company, Changzhou 213004, People's Republic of China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Wang
keywords: chromene; crystal structure; dimer formation; di­hydro­pyran ring; hydrogen bonding; nebivolol inter­mediate