Crystal structure of cis-bis-[4-phenyl-2-(1,2,3,4-tetra-hydro-naphthalen-1-yl-idene)hydrazinecarbo-thio-amidato-κ(2) N (1),S]nickel(II) monohydrate tetra-hydro-furan disolvate.

The reaction of Ni(II) acetate tetra-hydrate with the ligand 4-phenyl-2-(1,2,3,4-tetra-hydro-naphthalen-1-yl-idene)hydrazinecarbo-thio-amide in a 2:1 molar ratio yielded the title compound, [Ni(C16H16N3S)2]·2C4H8O·H2O. The deprotonated ligands act as N,S-donors, forming five-membered metallacycles with the metal ion exhibiting a cis coordination mode unusual for thio-semicarbazone complexes. The Ni(II) ion is four-coordinated in a tetra-hedrally distorted square-planar geometry. Trans-arranged anagostic C-H⋯Ni inter-actions are observed. In the crystal, the complex mol-ecules are linked by water mol-ecules through N-H⋯O and O-H⋯S hydrogen-bonding inter-actions into centrosymmetric dimers stacked along the c axis, forming rings of graph-set R 4 (4)(12). Classical O-H⋯O hydrogen bonds involving the water and tetra-hydro-furan solvent mol-ecules as well as weak C-H⋯π inter-actions are also present.

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

In the crystal structure of the title compound, C11H15N3O2S, the C-N-N-C and C-N-C-C torsion angles involving the benzene ring and ethyl group are 11.91 (15) and 99.4 (2)°, respectively. An intra-molecular N-H⋯N hydrogen bond is observed. In the crystal, mol-ecules are linked via N-H⋯O and N-H⋯S hydrogen bonds into a three-dimensional hydrogen bonded network. Finally, the molecules show a herringbone arrangement when viewed along the a axis.

Bis(4-hy-droxy-3-meth-oxy-benzaldehyde 4-phenyl-thio-semicarbazonato-N (1),S)nickel(II).

In the title compound, [Ni(C15H14N3O2S)2], the Ni(II) atom lies on a center of symmetry. The deprotonated ligands act as N,S-donors, forming five-membered metalla-rings. The Ni(II) atom is four-coordinated in a slightly distorted square-planar environment. In the crystal, the discrete complex mol-ecules are linked by weak N-H⋯O hydrogen bonds, generating chains along [110]. The chains are further connected via weak O-H⋯N inter-actions into a layered network extending parallel to (001).

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

The conformation of the title mol-ecule, C17H17N3S, is stabilized by an intra-molecular 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 tetra-lone substituent adopts a sofa conformation. In the crystal, mol-ecules are linked by pairs of N-H⋯S hydrogen bonds related via centres of symmetry, forming dimers.

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

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, mol-ecules 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.

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

There are two independent mol-ecules 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 mol-ecule and 0.50:0.50 in the second) with the methyl H atoms also being disordered in the first mol-ecule (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 mol-ecule and 7.60 (13)° in the second. In the crystal, mol-ecules are linked by weak N-H⋯S hydrogen bonds into chains along the a-axis direction. The crystal packing ressembles a herringbone arrangement.

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

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

The charge-transfer complex 1-amino-anthraquinone-7,7',8,8'-tetra-cyano-quinodimethane (1/1).

The reaction of 1-amino-anthraquinone with 7,7',8,8'-tetra-cyano-quinodimethane yielded the title charge-transfer complex, C(14)H(9)NO(2)·C(12)H(4)N(4). The mol-ecules have maximum deviations from the mean planes through the non-H atoms of 0.0769 (14) Šfor an oxo O atom and 0.1175 (17) Šfor a cyano N atom, respectively. The dihedral angle between the two planes is 3.55 (3)°. In the crystal, mol-ecules are stacked into columns along the a-axis direction. Pairs of N-H⋯N and N-H⋯O inter-actions connect the mol-ecules perpendicular to the stacking direction. Additionally, an intra-molecular N-H⋯O hydrogen-bond inter-action is observed for 1-amino-anthraquinone.

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

The mol-ecular structure of the title compound, C(11)H(13)N(3)S, is not planar: the maximum deviation from the mean plane of the non-H atoms is 0.521 (2) Šfor an aliphatic C atom, which corresponds to an envelope conformation for the non-aromatic ring. The hydrazinecarbothio-amide 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, mol-ecules are linked into chains along [1[Formula: see text]0] by pairs of N-H⋯S hydrogen bonds between mol-ecules related by centres of symmetry.

Crystal structure of (E)-2-[4-(4-hy-droxy-phen-yl)butan-2-yl-idene]hydrazine-1-carbo-thio-amide.

The title compound, C11H15N3OS, is a thio-semicarbazone derivative of the raspberry ketone rheosmin [systematic name: 4-(4-hy-droxy-phen-yl)butane-2-one]. The mol-ecule 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 thio-semicarbazone fragment [C=N-N-C(= S)-N] is 0.085 (5) Šfor the Schiff base N atom, and the dihedral angle between this mean plane and the aromatic ring is 50.31 (8)°. In the crystal, mol-ecules are linked by N-H⋯O, N-H⋯S and O-H⋯S hydrogen bonds, forming a three-dimensional structure, with the mol-ecules stacked along [011].

Crystal structure of 4-hy-droxy-3-meth-oxy-benzaldehyde 4-methyl-thio-semi-carbazone methanol monosolvate.

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