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

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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.

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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.

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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.

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In the title compound, [Cu2(C11H13N3O3S)2(C2H6OS)2], the CuII cation is N,N′,O-chelated by a deprotonated hy­droxy­imino-tosyl­hydrazone ligand and coordinated by a dimethyl sulfoxide mol­ecule. One O atom from the adjacent hy­droxy­imino-tosyl­hydrazone ligand bridges the CuII cation, forming the centrosymmetric dimeric complex. The cation is in an overall distorted N2O3 square-pyramidal coordination environment. The methyl­benzene ring is twisted with respect to the hydrazine fragment, with a dihedral angle of 89.54 (9)° between the planes. An intra­molecular C—H...O hydrogen bond occurs. In the crystal, mol­ecules are linked by weak C—H...O and C—H...S inter­actions. Weak π–π stacking is also observed between parallel benzene rings of adjacent mol­ecules, the centroid–centroid distance being 3.9592 (17) Å.

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In the title compound, C14H13ClN4S, obtained from a reaction of 2-benzoyl-4-chloro­aniline with thio­semicarbazide in ethanol, the dihedral angle between the aromatic rings is 81.31 (13)°. In the crystal, the mol­ecules are linked by three N—H...S hydrogen bonds, forming centrosymmetric rings with set-graph motif R22(8) and R22(18), and resulting in the formation of a two-dimensional network lying parallel to (010).

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In the title compound, C12H15N3S, the mol­ecule deviates slightly from planarity, with a maximum deviation from the mean plane of the non-H atoms of 0.2756 (6) Å for the S atom and a torsion angle for the N—N—C—N fragment of −7.04 (16)°. In the crystal, mol­ecules are linked by N—H...S hydrogen-bond inter­actions, forming centrosymmetric dimers. Additionally, one weak intra­molecular N—H...N hydrogen-bond inter­action is observed. The crystal packing shows a herringbone arrangement viewed along the c axis.

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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 intra­molecular N—H...N hydrogen bond is observed. In the crystal, mol­ecules 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.

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The title compound, C11H21N3S, consists of a menthone moiety attached to an extended thio­semicarbazone group with the N—N—C—N torsion angle being 11.92 (16)°. The cyclo­hexane ring has a chair conformation and the conformation about the C=N bond is E. In the crystal, mol­ecules are linked via pairs of N—H...S hydrogen bonds, forming chains along the a axis. The absolute structure could be assigned with reference to the starting material, i.e. enanti­opure (−)-menthone [Flack parameter = 0.05 (5)].

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The reaction of 2-(1,2,3,4-tetra­hydro­napthalen-1-yl­idene)hydrazinecarbo­thio­amide (TTSC) with pyrazine-2,3,5,6-tetra­carbo­nitrile (tetra­cyano­pyrazine, TCNP) yields the title 2:1 charge-transfer adduct, 2C11H12N3S·C6N8. The complete TCNP mol­ecule is generated by a crystallographic inversion centre and the non-aromatic ring in the TTSC mol­ecule adopts an envelope conformation with a methyl­ene C atom as the flap. In the crystal, the thio­semicarbazone mol­ecules are connected through inversion-related pairs of N—H...S inter­actions, building a polymeric chain along the b-axis direction. The TCNP mol­ecules are embedded in the structure, forming TTSC–TCNP–TTSC stacks with the aromatic rings of TTSC and the mol­ecular plane of TCNP in a parallel arrangement [centroid–centroid distance = 3.5558 (14) Å]. Charge-transfer (CT) via π-stacking is indicated by a CT band around 550 cm−1 in the single-crystal absorption spectrum.
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