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Publications (7)2.43 Total impact

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    ABSTRACT: Crystals of the title compound, C15H12N4O·H2O, were obtained from a condensation reaction of isonicotinylhydrazine and 3-indolylformaldehyde. The molecule assumes an E configuration, with the isonicotinoylhydrazine and indole units located on the opposite sites of the C=N double bond. In the molecular structure the pyridine ring is twisted with respect to the indole ring system, forming a dihedral angle of 44.72 (7)°. Extensive classical N—H...N, N—H...O, O—H...O and O—H...N hydrogen bonding and weak C—H...O interactions are present in the crystal structure.
    Acta Crystallographica Section E Structure Reports Online 01/2009; · 0.35 Impact Factor
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    ABSTRACT: In the title compound, C12H11N5O2, the molecule adopts an E configuration, with the benzene and pyrazine rings located on opposite sides of the N=C double bond. The face-to-face separations of 3.413 (14) and 3.430 (8) Å, respectively between parallel benzene rings and between pyrazine rings indicate the existence of π–π stacking between adjacent molecules. The crystal structure also contains N—H...N and C—H...O hydrogen bonding.
    Acta Crystallographica Section E Structure Reports Online 01/2008; · 0.35 Impact Factor
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    ABSTRACT: The molecule of the title compound, C16H16N2, is centrosymmetric and the dihedral angle between the benzene ring and the dimethylhydrazine mean plane is 16.11 (15)°.
    Acta Crystallographica Section E Structure Reports Online 01/2008; · 0.35 Impact Factor
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    Xu Lu-Feng, Shan Shang, Wang Wen-Long, Wang Shan-Heng
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    ABSTRACT: Crystals of the title compound, C11H14N4O4, were obtained from a condensation reaction of 2,4-dinitrophenylhydrazine and 3-pentanone. In the crystal structure, the molecule, except one methyl group, displays a nearly planar structure. The imino group links to the adjacent nitro group via intramolecular hydrogen bonding. The partially overlapped arrangement and face-to-face separation of 3.410 (9) Å between parallel benzene rings indicate the existence of π–π stacking between adjacent molecules. The crystal structure also contains weak intermolecular C—H...O hydrogen bonding.
    Acta Crystallographica Section E Structure Reports Online 01/2008; · 0.35 Impact Factor
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    ABSTRACT: The asymmetric unit of the title compound, C9H9N3O2S2, contains two independent molecules, A and B, with similar bond dimensions. In both molecules, the nitro group is tilted with respect to the aromatic ring [dihedral angles 32.0 (1)° in molecule A and 34.0 (1)° in molecule B]. The dithiocarbazate unit is nearly coplanar with the aromatic ring in both molecules. For molecule B, pairs of molecules are linked by N—H...O and C—H...O hydrogen bonds about a centre of symmetry to form a dimer, whereas molecules A are not involved in hydrogen bonding in the crystal structure.
    Acta Crystallographica Section E Structure Reports Online 01/2008; · 0.35 Impact Factor
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    Fan Zheng, Shan Shang, Wang Shan-Heng, Wang Wen-Long
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    ABSTRACT: Crystals of the title compound, C15H15N3O3, were obtained from a condensation reaction of 4-nitrophenylhydrazine and 3-methoxyacetophenone. In the crystal structure, the methoxyphenyl ring is twisted slightly with respect to the nitrophenylhydrazine plane, making a dihedral angle of 14.81 (8)°. The nitro and methoxy groups are each coplanar with the attached benzene rings. The nitrophenyl and methoxyphenyl groups are located on opposite sides of the C=N double bond, indicating an E configuration of the molecule. Adjacent molecules are linked together via N—H...O hydrogen bonding, forming chains along the [101] direction.
    Acta Crystallographica Section E Structure Reports Online 01/2008; · 0.35 Impact Factor
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    ABSTRACT: Crystals of the title compound, C15H15N3O, were obtained from a condensation reaction of benzohydrazide and 1-(4-aminophenyl)ethanone. The molecule assumes an E configuration with the aminophenyl and benzohydrazide units located on opposite sites of the C=N double bond. In the crystal structure, the benzene rings of the molecule are slightly twisted with respect to the central hydrazide, the dihedral angles being 18.22 (12) and 27.62 (12)°. The crystal structure contains intermolecular N—H...O and weak C—H...N hydrogen bonding.
    Acta Crystallographica Section E Structure Reports Online 01/2008; · 0.35 Impact Factor