title: Crystal structure of 4-{[(cyano-imino)(methyl-sulfanyl)meth-yl]amino}-1,5-dimethyl-2-phenyl-2,3-di-hydro-1H-pyrazol-3-one.
abstract: In the title compound, C14H15N5OS, the tautomer present in the solid state is that in which the immediately exocyclic N atom bears the H atom. The central five-membered ring is almost planar (r.m.s. deviation = 0.025 Å), but both its N atoms are significantly pyramidalized. A classical hydrogen bond from the N-H group to the cyanide N atom forms inversion-symmetric dimers, which are further linked by C-H⋯O inter-actions.
authors.affiliation: Chemistry Department, Faculty of Science, Helwan University, Cairo, Egypt.
authors.forename: Galal H
authors.initials: GH
authors.lastname: Elgemeie
authors.affiliation: Green Chemistry Department, National Research Center, Dokki, Cairo, Egypt.
authors.forename: Mamdouh
authors.initials: M
authors.lastname: Abouzeid
authors.affiliation: Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Postfach 3329, D-38023 Braunschweig, Germany.
authors.forename: Peter G
authors.initials: PG
authors.lastname: Jones
keywords: crystal structure; hydrogen bond; pyrazole; thio­carbamate