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4-Methyl-benzaldehyde thio-semi-carbazone.

ABSTRACT: The title compound, C(9)H(11)N(3)S, was prepared by reacting 4-methyl-benzaldehyde with thio-semicarbazide. An intra-molecular N-H⋯N hydrogen bond helps to establish the observed mol-ecular conformation. The crystal packing is realized by inter-molecular N-H⋯S hydrogen bonds.

SUBMITTER: Zhang J

PROVIDER: S-EPMC2969930 | biostudies-literature | 2009 Aug

REPOSITORIES: biostudies-literature

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4-Methyl-benzaldehyde thio-semi-carbazone.

Zhang Jian J Geng Hao H Zhuang Ling-Hua LH Wang Guo-Wei GW

Acta crystallographica. Section E, Structure reports online 20090826 Pt 9

The title compound, C(9)H(11)N(3)S, was prepared by reacting 4-methyl-benzaldehyde with thio-semicarbazide. An intra-molecular N-H⋯N hydrogen bond helps to establish the observed mol-ecular conformation. The crystal packing is realized by inter-molecular N-H⋯S hydrogen bonds. ...[more]

PMID: 21577642

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3-Methoxy-benzaldehyde thio-semi-carbazone.

Project description:The title compound, C(9)H(11)N(3)OS, was prepared by the reaction of 3-methoxy-benzaldehyde and thio-semicarbazide. The benzyl-idene ring and the thio-semicarbazone fragment are slightly twisted, making a dihedral angle of 14.1 (1)°. A weak intra-molecular N-H⋯N hydrogen bond may influence the conformation of the mol-ecule. Inter-molecular N-H⋯S hydrogen bonds build up a three-dimensional network.

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Project description:The mol-ecule of the title compound, C(9)H(8)N(4)S, adopts an E configuration about both the C=N and C-NH 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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Crystal structure of a new monoclinic polymorph of 2,4-di-hydroxy-benzaldehyde 4-methyl-thio-semi-carbazone.

Project description:The title compound, C9H11N3O2S, is a second monoclinic (P21/c) polymorph of the previously reported Cc form [Tan et al. (2008b ▶). Acta Cryst. E64, o2224]. The mol-ecule is non-planar, with the dihedral angle between the N3CS residue (r.m.s. deviation = 0.0816 Å) and the benzene ring being 21.36 (4)°. The conformation about the C=N bond [1.292 (2) Å] is E, the two N-bound H atoms are anti, and the inner hy-droxy O-bound and outer amide N-bound H atoms form intra-molecular hydrogen bonds to the imine N atom. Crucially, the H atom of the outer hy-droxy group is approximately syn to the H atom of the benzene C atom connecting the two C atoms bearing the hy-droxy substituents. This arrangement enables the formation of supra-molecular tubes aligned along [010] and sustained by N-H⋯O, O-H⋯S and N-H⋯S hydrogen bonds; the tubes pack with no specific inter-actions between them. While the mol-ecular structure in the Cc form is comparable, the H atom of the outer hy-droxy group is approximately anti, rather than syn. This different orientation leads to the formation a three-dimensional architecture based on N-H⋯O and O-H⋯S hydrogen bonds.

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

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Pyridine-2-carbaldehyde thio-semi-carbazone.

Project description:The asymmetric unit of the title compound, C(7)H(8)N(4)S, contains two independent mol-ecules with slightly different conformations; the dihedral angles between the pyridine ring and mean plane of the thio-semicarbazone unit in the two mol-ecules are 2.88 (5) and 6.30 (5)°. Inter-molecular N-H⋯N and N-H⋯S hydrogen bonds link the mol-ecules into layers parallel to the ab plane.

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1-(Thio-phen-2-yl)ethanone thio-semi-carbazone.

Project description:The title compound, C(7)H(9)N(3)S(2), crystallizes with two unique mol-ecules in the unit cell, both present as thio-semicarbazide tautomers. The mol-ecules differ principally in the dihedral angles between the thio-phene ring planes and the planes through the non-H atoms of the hydrazinecarbothio-amide units, viz. 9.80 (8)° for one mol-ecule and 19.37 (7)° for the other. The hydrazinecarbothio-amide units are reasonably planar, with r.m.s. deviations of 0.001Å for each of the mol-ecules. In the crystal, N-H⋯S hydrogen bonds link like mol-ecules into R(2) (2)(8) inversion dimers. A three-dimensional network structure is generated by additional N-H⋯S hydrogen bonds and weak C-H⋯S contacts between the unique mol-ecules.

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1H-Indole-3-carbaldehyde thio-semi-carbazone.

Project description:The mol-ecules of the title compound, C(10)H(10)N(4)S, are linked by N-H(indole)⋯S hydrogen bonds to form a linear hydrogen-bonded chain. There are two independent mol-ecules in the asymmetric unit.

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