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2-Hydr-oxy-5-nitro-benzaldehyde thio-semicarbazone.

ABSTRACT: The mol-ecule of the title compound, C(8)H(8)N(4)O(3)S, is planar. Adjacent mol-ecules are linked through O-H?S, N-H?S and N-H?O hydrogen bonds into a three-dimensional network.

SUBMITTER: Alhadi AA

PROVIDER: S-EPMC2962218 | biostudies-literature | 2008 Jul

REPOSITORIES: biostudies-literature

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2-Hydr-oxy-5-nitro-benzaldehyde thio-semicarbazone.

Alhadi Abeer A AA Ali Hapipah M HM Puvaneswary Subramaniam S Robinson Ward T WT Ng Seik Weng SW

Acta crystallographica. Section E, Structure reports online 20080726 Pt 8

The mol-ecule of the title compound, C(8)H(8)N(4)O(3)S, is planar. Adjacent mol-ecules are linked through O-H⋯S, N-H⋯S and N-H⋯O hydrogen bonds into a three-dimensional network. ...[more]

PMID: 21203299

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(E)-2-Hydr-oxy-3-methoxy-benzaldehyde thio-semicarbazone.

Project description:In the title compound, C(9)H(11)N(3)O(2)S, intra-molecular O-H?O and N-H?N hydrogen bonds contribute to the planarity of the mol-ecular skeleton. Inter-molecular N-H?O hydrogen bonds link the mol-ecules into zigzag chains along the b axis; these mol-ecules are futher paired by ?-? inter-actions [centroid-centroid distance 4.495?(5)?Å]. The crystal structure also exhibits weak inter-molecular N-H?S and O-H?S hydrogen bonds.

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3-Hydr-oxy-4-methoxy-benzaldehyde thio-semicarbazone hemihydrate.

Project description:The asymmetric unit of the title compound, C(9)H(11)N(3)O(2)S·0.5H(2)O, comprises two crystallograpically independent thio-semicarbazone mol-ecules (A and B) and a water mol-ecule of crystallization. In each of the thio-semicarbazone mol-ecules, intra-molecular O-H⋯O and N-H⋯N hydrogen bonds form five-membered rings, producing S(5) ring motifs. Inter-molecular O-H⋯S and N-H⋯O inter-actions between mol-ecule B and the water mol-ecule form a six-membered ring, producing an R(2) (2)(6) ring motif. Inter-molecular N-H⋯S hydrogen bonds form dimers involving pairs of both A and B mol-ecules, which form R(2) (2)(8) ring motifs. The angles between the aromatic ring and thio-urea unit in the two mol-ecules are 0.80 (6) and 3.28 (5)°, which proves that each mol-ecule is fairly planar. The crystal structure is stabilized by inter-molecular O-H⋯S (×2), O-H⋯O, N-H⋯S (×2) and N-H⋯O (×2) hydrogen bonds and C-H⋯O (×2) contacts to form a three-dimensional network.

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3-Nitro-benzaldehyde thio-semicarbazone.

Project description:The mol-ecule of the title compound, C(8)H(8)N(4)O(2)S, adopts an E configuration about both the C-N bonds. In the crystal structure, adjacent mol-ecules are linked by inter-molecular N-H?S hydrogen-bonding inter-actions, forming chains running parallel to the b axis.

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2-Chloro-5-nitro-benzaldehyde thio-semicarbazone.

Project description:The title Schiff base compound, C(8)H(7)ClN(4)O(2)S, was prepared by the reaction of equimolar quanti-ties of 2-chloro-5-nitro-benzaldehyde with thio-semicarbazide in methanol. The mol-ecule adopts a trans configuration with respect to the azomethine group and the dihedral angle between the benzene ring and the thio-semicarbazide group is 6.8?(3)°. In the crystal, mol-ecules are linked through inter-molecular N-H?S hydrogen bonds, forming chains propagating in [010].

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4-Hydr-oxy-3-nitro-benzaldehyde.

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

Project description:The title Schiff base compound, C(9)H(11)N(3)O(2)S, was prepared by the reaction of equimolar quanti-ties of 2-hy-droxy-4-meth-oxy-benzaldehyde with thio-semicarbazide in methanol. The mol-ecule adopts a trans configuration with respect to the azo-methine group and an intra-molecular O-H?N hydrogen bond generates an S(6) ring. In the crystal structure, mol-ecules are linked through inter-molecular N-H?O and N-H?S hydrogen bonds, forming a three-dimensional network.

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

Project description: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.

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

Project description: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.

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