title: Crystal structure of 3-bromo-acetyl-6-chloro-2H-1-benzo-pyran-2-one.
abstract: In the title compound, C11H6BrClO3, the benzo-pyran ring system is essentially planar, with a maximum deviation of 0.036 (2) Å for the O atom. The Cl and Br atoms are displaced by -0.0526 (8) and 0.6698 (3) Å, respectively, from the mean plane of this ring system. In the crystal, two pairs of weak C-H⋯O hydrogen bonds to the same acceptor O atom link mol-ecules into inversion dimers.
authors.affiliation: Dr Reddys Laboratory, Innovation Plaza, IPDO, Bachupally, Hyderabad 500 090, India.
authors.forename: Ramanaiah
authors.initials: R
authors.lastname: Chennuru
authors.affiliation: Dr Reddys Laboratory, Innovation Plaza, IPDO, Bachupally, Hyderabad 500 090, India.
authors.forename: Balaji
authors.initials: B
authors.lastname: Maddimsetti
authors.affiliation: GITAM University, Department of Chemistry, College of Science, Vishakapatnam, Andhrapradesh, India.
authors.forename: Suman
authors.initials: S
authors.lastname: Gundlapalli
authors.affiliation: GITAM University, Department of Chemistry, College of Science, Vishakapatnam, Andhrapradesh, India.
authors.forename: R Ravi Chandra
authors.initials: RR
authors.lastname: Babu
authors.affiliation: Dr Reddys Laboratory, Innovation Plaza, IPDO, Bachupally, Hyderabad 500 090, India.
authors.forename: Sudarshan
authors.initials: S
authors.lastname: Mahapatra
keywords: coumarin; crystal structure; hydrogen bonding