title: Crystal structure of 1-(4-formyl-benzyl-idene)thio-semicarbazone.
abstract: The asymmetric unit of the title compound, C9H9N3OS, contains two approximately planar mol-ecules (r.m.s. deviations for 14 non-H atoms = 0.094 and 0.045 Å), with different conformations. In one of them, the C=O group is syn to the S atom and in the other it is anti. Each mol-ecule features an intra-molecular N-H⋯N hydrogen bond, which generates an S(5) ring. In the crystal, mol-ecules are linked by N-H⋯O and N-H⋯S hydrogen bonds, generating discrete networks; the syn mol-ecules form [010] chains and the anti mol-ecules form (100) sheets.
authors.affiliation: Departamento de Química Inorgánica, Facultade de Química, Edificio de Ciencias Experimentais, Universidade de Vigo, E-36310 Vigo, Galicia, Spain.
authors.forename: Rosa
authors.initials: R
authors.lastname: Carballo
authors.affiliation: Departamento de Química Inorgánica, Facultade de Química, Edificio de Ciencias Experimentais, Universidade de Vigo, E-36310 Vigo, Galicia, Spain.
authors.forename: Arantxa
authors.initials: A
authors.lastname: Pino-Cuevas
authors.affiliation: Departamento de Química Inorgánica, Facultade de Química, Edificio de Ciencias Experimentais, Universidade de Vigo, E-36310 Vigo, Galicia, Spain.
authors.forename: Ezequiel M
authors.initials: EM
authors.lastname: Vázquez-López
keywords: crystal structure; hydrogen bonds; thio­semicarbazone