title: 5,6,7,8-Tetra-hydro-quinoline 1-oxide hemihydrate.
abstract: In the title compound, C(9)H(11)NO·0.5H(2)O, the asymmetric unit contains two similar mol-ecules of 5,6,7,8-tetra-hydro-quinoline 1-oxide and one water mol-ecule. The water mol-ecule links the two O atoms of both independent N-oxides into dimers via O-H⋯O hydrogen bonds, forming a three-dimensional network along [101], which is additionally stabilized by weak C-H⋯O inter-molecular inter-actions. In each mol-ecule, the saturated six-membered rings exist in a conformation inter-mediate between a half-chair and sofa.
authors.forename: Zbigniew
authors.initials: Z
authors.lastname: Karczmarzyk
authors.forename: Teodozja M
authors.initials: TM
authors.lastname: Lipińska
authors.forename: Waldemar
authors.initials: W
authors.lastname: Wysocki
authors.forename: Zofia
authors.initials: Z
authors.lastname: Urbańczyk-Lipkowska
authors.forename: Przemysław
authors.initials: P
authors.lastname: Kalicki