title: 6-Chloro-2H-1,4-benzoxazin-3(4H)-one.
abstract: In the title compound, C(8)H(6)ClNO(2), the conformation of the six-membered heterocyclic ring is close to screw boat and the mol-ecules are linked via inter-molecular N-H⋯O hydrogen bonds along the b axis.
authors.forename: Wen-Chang
authors.initials: WC
authors.lastname: Zhuang
authors.forename: Yong-Sheng
authors.initials: YS
authors.lastname: Xie