title: Crystal structure of (Z)-3-(4-meth-oxy-benzyl-idene)-2,3-di-hydro-benzo[b][1,4]thia-zepin-4(5H)-one.
abstract: In the title compound, C17H15NO2S, the two C atoms linking the S and carbonyl C atoms of the seven-membered thia-zepine ring are disordered over two sites, with occupancies of 0.511 (4) and 0.489 (4); both disorder components adopt distorted twist-boat conformations. In the crystal, N-H⋯O and C-H⋯O hydrogen bonds link inverted-related mol-ecules into dimers, incorporating R 1 (2)(6) and R 2 (2)(8) ring motifs; the acceptor carbonyl O atom is bifurcated. These dimers are further linked by C-H⋯O hydrogen bonds, forming supra-molecular tapes running along the a axis.
authors.affiliation: Department of Organic Chemistry, University of Madras, Maraimalai Campus, Chennai 600 025, India.
authors.forename: V
authors.initials: V
authors.lastname: Vinayagam
authors.affiliation: Department of Physics, C. Abdul Hakeem College of Engineering & Technology, Melvisharam, Vellore 632 509, India.
authors.forename: J
authors.initials: J
authors.lastname: Mohan Raj
authors.affiliation: Department of Physics, Thanthai Periyar Government Institute of Technology, Vellore 632 002, India.
authors.forename: S
authors.initials: S
authors.lastname: Murugavel
authors.affiliation: Department of Organic Chemistry, University of Madras, Maraimalai Campus, Chennai 600 025, India.
authors.forename: R
authors.initials: R
authors.lastname: Selvakumar
authors.affiliation: Department of Organic Chemistry, University of Madras, Maraimalai Campus, Chennai 600 025, India ; Department of Chemistry, Pondicherry University, Puducherry 605 014, India.
authors.forename: M
authors.initials: M
authors.lastname: Bakthadoss
keywords: benzo[b][1,4]thia­zepin-4(5H)-one; crystal structure; hydrogen bonding; pharmaceutical properties; thia­zepin derivatives