title: Crystal structure of 2,2,4-trimethyl-2,3,4,5-tetra-hydro-1H-benzo[b][1,4]diazepine hemihydrate.
abstract: The title compound, C12H18N2·0.5H2O, crystallizes with two independent organic mol-ecules (A and B) in the asymmetric unit, together with a water mol-ecule of crystallization. The diazepine rings in each mol-ecule have a chair conformation. The dihedral angle between benzene ring and the mean plane of the diazepine ring is 21.15 (12)° in mol-ecule A and 17.42 (11)° in mol-ecule B. In the crystal, mol-ecules are linked by N-H⋯O and O-H⋯N hydrogen bonds, forming zigzag chains propagating along [001].
authors.affiliation: PG and Research Department of Physics, Queen Mary's College, Chennai-4, Tamilnadu, India.
authors.forename: K S
authors.initials: KS
authors.lastname: Ezhilarasi
authors.affiliation: PG and Research Department of Chemistry, Government Arts College, Coimbatore-18, Tamilnadu, India.
authors.forename: A
authors.initials: A
authors.lastname: Akila
authors.affiliation: PG and Research Department of Chemistry, Government Arts College, Coimbatore-18, Tamilnadu, India.
authors.forename: S
authors.initials: S
authors.lastname: Ponnuswamy
authors.affiliation: PG and Research Department of Physics, Queen Mary's College, Chennai-4, Tamilnadu, India.
authors.forename: B K
authors.initials: BK
authors.lastname: Revathi
authors.affiliation: PG and Research Department of Physics, Queen Mary's College, Chennai-4, Tamilnadu, India.
authors.forename: G
authors.initials: G
authors.lastname: Usha
keywords: benzodiazepine; crystal structure; hydrogen bonding