Bárbara Regina Santos Feitosa

2-(1,2,3,4-Tetra-hydro-naphthalen-1-yl-idene)hydrazinecarbothio-amide.

The molecular structure of the title compound, C11H13N3S, is not planar: the maximum deviation from the mean plane of the non-H atoms is 0.521 (2) Å for an aliphatic C atom, which corresponds to an envelope conformation for the non-aromatic ring. The hydrazinecarbothioamide substituent and the benzene ring have maximum deviations from the mean planes through the non-H atoms of 0.0288 (16) and 0.0124 (27) Å, respectively, and the dihedral angle between the two planes is 8.84 (13)°. In the crystal, molecules are linked into chains along [10] by pairs of N—H⋯S hydrogen bonds between molecules related by centres of symmetry.

N-Phenyl-2-(1,2,3,4-tetra­hydro­naph­thalen-1-yl­idene)hydrazinecarbo­thio­amide

The conformation of the title molecule, C17H17N3S, is stabilized by an intramolecular N—H⋯N hydrogen bond involving the azometinic group. The dihedral angle between the two aromatic rings is 36.49 (06)°. The non-aromatic ring of the tetralone substituent adopts a sofa conformation. In the crystal, molecules are linked by pairs of N—H⋯S hydrogen bonds related via centres of symmetry, forming dimers.

Crystal structure of (E)-2-[4-(4-hy­droxy­phen­yl)butan-2-yl­idene]hydrazine-1-carbo­thio­amide

The title compound, C11H15N3OS, is a thiosemicarbazone derivative of the raspberry ketone rheosmin [systematic name: 4-(4-hydroxyphenyl)butane-2-one]. The molecule deviates from planarity, with the bridging C—C—C=N torsion angle equal to −101.3 (2)°. The maximum deviation from the mean plane of the non-H atoms of the thiosemicarbazone fragment [C=N—N—C(= S)—N] is 0.085 (5) Å for the Schiff base N atom, and the dihedral angle between this mean plane and the aromatic ring is 50.31 (8)°. In the crystal, molecules are linked by N—H⋯O, N—H⋯S and O—H⋯S hydrogen bonds, forming a three-dimensional structure, with the molecules stacked along [011].

N-Methyl-2-(1,2,3,4-tetra-hydro-naph-thalen-1-yl-idene)hydrazinecarbo-thio-amide.

There are two independent molecules in the asymmetric unit of the title compound, C12H15N3S, both of which display disorder of several C atoms in the N-bound ring (occupancy ratios of 0.75:0.25 in the first independent molecule and 0.50:0.50 in the second) with the methyl H atoms also being disordered in the first molecule (occupancy ratio of 0.70:0.30). The planes of the benzene ring and the N—N—C—N fragment make dihedral angles of 12.92 (14)° in the first independent molecule and 7.60 (13)° in the second. In the crystal, molecules are linked by weak N—H⋯S hydrogen bonds into chains along the a-axis direction. The crystal packing ressembles a herringbone arrangement.

4-Hydroxy-3-methoxybenzaldehyde 4-phenylthiosemicarbazone

In the title compound, C15H15N3O2S, the central C—N—N—C unit has an anti conformation [torsion angle = −170.17 (15)°]. The phenyl substituent is oriented perpendicular to this unit [dihedral angle of 89.2 (1)°], whereas the substituted ring is rotated out of this plane by only 18.86 (17)°. In the crystal, molecules are linked by pairs of N—H⋯S hydrogen bonds into inversion dimers that are further connected via N—H⋯O and O—H⋯S hydrogen bonds into a three-dimensional network.

Crystal structure of cis-bis­[4-phenyl-2-(1,2,3,4-tetra­hydro­naphthalen-1-yl­idene)hydrazinecarbo­thio­amidato-κ2N1,S]nickel(II) monohydrate tetra­hydro­furan disolvate

Crystal structure of a NiII–thiosemicarbazone complex showing an unusual cis arrangement of the N,S-donor ligands and anagostic C—H⋯Ni interactions.

4-Hy-droxy-3-meth-oxy-benzaldehyde thio-semicarbazone.

In the title compound, C9H11N3S, there is an intramolecular O—H⋯O hydrogen bond involving the OH group and the adjacent methoxy O atom. The molecule is essentially planar, with the maximum deviation from the mean plane of the non-H atoms being 0.1127 (14) Å for the methyl C atom. In the crystal, molecules are connected via centrosymmetric pairs of N—H⋯S and O—H⋯O hydrogen bonds into a two-dimensional network parallel to (10-3).

Crystal structure of 4-hydroxy-3-meth-oxybenzaldehyde 4-methylthiosemi-carbazone methanol monosolvate

In the title solvate, C15H15N3O2S·CH3OH, the thiosemicarbazone molecule is approximately planar; the maximum deviation from the mean plane is 0.4659 (14) Å and the dihedral angle between the aromatic rings is 9.83 (8)°. This conformation is supported by an intramolecular N—H⋯N hydrogen bond. In the crystal, the thiosemicarbazone molecules are linked into dimers by pairs of N—H⋯S hydrogen bonds, thereby generating R 2 2(8) loops. The methanol solvent molecule bonds to the thiosemicarbazone molecule through a bifurcated O—H⋯(O,O) hydrogen bond and also accepts an O—H⋯O link from the thiosemicarbazone molecule. Together, these links generate a three-dimensional network.

Crystal structure of 4-hydroxy-3-methoxybenzaldehyde 4-methylthiosemicarbazone methanol monosolvate

In the title solvate, C15H15N3O2S·CH3OH, the thiosemicarbazone molecule is approximately planar; the maximum deviation from the mean plane is 0.4659 (14) Å and the dihedral angle between the aromatic rings is 9.83 (8)°. This conformation is supported by an intramolecular N—H⋯N hydrogen bond. In the crystal, the thiosemicarbazone molecules are linked into dimers by pairs of N—H⋯S hydrogen bonds, thereby generating R 2 2(8) loops. The methanol solvent molecule bonds to the thiosemicarbazone molecule through a bifurcated O—H⋯(O,O) hydrogen bond and also accepts an O—H⋯O link from the thiosemicarbazone molecule. Together, these links generate a three-dimensional network.

Crystal structure of 4-hy­droxy-3-meth­oxy­benzaldehyde 4-methyl­thio­semi­carbazone methanol monosolvate

In the title solvate, C15H15N3O2S·CH3OH, the thiosemicarbazone molecule is approximately planar; the maximum deviation from the mean plane is 0.4659 (14) Å and the dihedral angle between the aromatic rings is 9.83 (8)°. This conformation is supported by an intramolecular N—H⋯N hydrogen bond. In the crystal, the thiosemicarbazone molecules are linked into dimers by pairs of N—H⋯S hydrogen bonds, thereby generating R 2 2(8) loops. The methanol solvent molecule bonds to the thiosemicarbazone molecule through a bifurcated O—H⋯(O,O) hydrogen bond and also accepts an O—H⋯O link from the thiosemicarbazone molecule. Together, these links generate a three-dimensional network.