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3,4,5-Trihy-droxy-benzohydrazide.

ABSTRACT: In the title compound, C(7)H(8)N(2)O(4), the dihedral angle between the aromatic ring and the hydrazide grouping is 21.34?(7)°. In the crystal, the mol-ecules are linked into a three-dimensional network by O-H?O, O-H?N and N-H?O hydrogen bonds.

SUBMITTER: Ashiq U

PROVIDER: S-EPMC3200770 | biostudies-literature | 2011 Sep

REPOSITORIES: biostudies-literature

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3,4,5-Trihy-droxy-benzohydrazide.

Ashiq Uzma U Ara Jamal Rifat R Yousuf Sammer S

Acta crystallographica. Section E, Structure reports online 20110827 Pt 9

In the title compound, C(7)H(8)N(2)O(4), the dihedral angle between the aromatic ring and the hydrazide grouping is 21.34 (7)°. In the crystal, the mol-ecules are linked into a three-dimensional network by O-H⋯O, O-H⋯N and N-H⋯O hydrogen bonds. ...[more]

PMID: 22065728

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4,4'-Ethyl-enedipyridinium bis-(3,4,5-trihy-droxy-benzoate) sesquihydrate.

Project description:The asymmetric unit of the title compound, C(12)H(14)N(2) (2+)·2C(7)H(5)O(5) (-)·1.5H(2)O, contains two 4,4'-ethyl-enedipyridinium cations, four gallate anions and three water mol-ecules. In the 4,4'-ethyl-enedipyridinium cations, the dihedral angles between the pyridinium rings are 4.3?(3) and 18.6?(3)°. Extensive classical N-H?O and O-H?O hydrogen bonding and weak C-H?O hydrogen bonding and C-H?? inter-actions are present in the crystal structure. ?-? stacking is also observed, the centroid-centroid separations between the benzene and pyridine rings being 3.611?(3), 3.448?(3) and 3.536?(3)?Å.

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Crystal structure of 4,6-dimethyl-2-{[3,4,5-trihy-droxy-6-(hy-droxy-meth-yl)tetra-hydro-2H-pyran-2-yl]sulfan-yl}nicotino-nitrile.

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