title: 3,5-Dichloro-2-hydroxy-benzaldehyde.
abstract: The title compound, C(7)H(4)Cl(2)O(2), exhibits a layer crystal structure; mol-ecules within each layer are linked by weak C-H⋯O inter-molecular hydrogen bonds. There is also an intramolecular O-H⋯O hydrogen bond.
authors.forename: Ying
authors.initials: Y
authors.lastname: Fan
authors.forename: Wei
authors.initials: W
authors.lastname: You
authors.forename: Jian-Lan
authors.initials: JL
authors.lastname: Liu
authors.forename: Hui-Fen
authors.initials: HF
authors.lastname: Qian
authors.forename: Wei
authors.initials: W
authors.lastname: Huang