title: 1-[(4-Chlorobenzoyl)methyl]-4-(N,N-dimethylamino)pyridinium bromide sesquihydrate and 1-[(4-bromobenzoyl)methyl]-4-(N,N-dimethylamino)pyridinium bromide sesquihydrate.
abstract: The title compounds, C15H16ClN2O+.Br-.1.5H2O and C15H16BrN2O+.Br-.1.5H2O, are isomorphous. The benzene ring is oriented nearly normal to the pyridine ring in both compounds. The molecular packing is mainly influenced by intermolecular O-H...O and O-H...Br interactions, as well as weak intramolecular C-H...O interactions. The H2OBr- units form an extended water-bromide chain, with a bridging water molecule on a twofold axis.
authors.affiliation: Department of Physics, National College, Tiruchirappalli 620 001, India.
authors.forename: T V
authors.initials: TV
authors.lastname: Sundar
authors.forename: V
authors.initials: V
authors.lastname: Parthasarathi
authors.forename: K
authors.initials: K
authors.lastname: Sarkunam
authors.forename: M
authors.initials: M
authors.lastname: Nallu
authors.forename: B
authors.initials: B
authors.lastname: Walfort
authors.forename: H
authors.initials: H
authors.lastname: Lang
mesh_terms: D015761:4-Aminopyridine / Q000031:analogs & derivatives* / Q000737:chemistry*; D001965:Bromides / Q000737:chemistry; D018360:Crystallography, X-Ray; D015394:Molecular Structure
chemical_list: D001965:Bromides; D015761:4-Aminopyridine; C003885:4-dimethylaminopyridine