Pyrazine-2-carbohydrazide: a three-dimensional hydrogen-bonded framework structure
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چکیده
منابع مشابه
Hydrogen-bonded dimers in 2-nitrobenzaldehyde hydrazone and a three-dimensional hydrogen-bonded framework in 3-nitrobenzaldehyde hydrazone.
Molecules of 2-nitrobenzaldehyde hydrazone, C7H7N3O2, where Z' = 2, are linked by two N-H...N hydrogen bonds into isolated dimers, whereas in the isomeric 3-nitrobenzaldehyde hydrazone, where Z' = 1, the molecules are linked by one N-H...O hydrogen bond and one N-H...N hydrogen bond into a three-dimensional framework structure.
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In the title compound, C(15)H(15)N(3)Ox3H(2)O, two of the three water molecules exhibit disorder. The molecular components are linked into a three-dimensional framework by a combination of N-H...O, O-H...N and O-H...O hydrogen bonds.
متن کامل2-(4-Nitrophenoxy)benzoic acid: a three-dimensional hydrogen-bonded framework in a triclinic structure having Z' = 3.
The title compound, C(13)H(9)NO(5), crystallizes in space group P-1, with Z' = 3. The molecules are linked by O-H...O hydrogen bonds [H...O = 1.79-1.81 A, O...O = 2.625 (3)-2.648 (3) A and O-H...O = 172-176 degrees ] into two types of R(2)(2)(8) dimer, only one of which is centrosymmetric. An extensive series of soft hydrogen bonds, of C-H...O and C-H...pi(arene) types, links the dimers into a ...
متن کاملN′-[(E)-2-Methoxybenzylidene]pyrazine-2-carbohydrazide
In the title compound, C(13)H(12)N(4)O(2), all the non-H atoms lie on a crystallographic mirror plane and an intra-molecular N-H⋯N hydrogen bond generates an S(5) ring; the conformation about the imine bond [1.280 (3) Å] is E. In the crystal, mol-ecules assemble into a two-dimensional array via C-H⋯O(carbon-yl) and C-H⋯N(pyrazine) contacts. Layers stack along the b-axis direction via weak π-π i...
متن کامل2′-(3-Hydroxybenzylidene)pyrazine-2-carbohydrazide monohydrate
The title compound, C(12)H(10)N(4)O(2)·H(2)O, was synthesized by the reaction of pyrazine-2-carboxylic acid hydrazide and 3-hydroxy-benzaldehyde in ethanol. In the crystal structure, the organic mol-ecules are linked into extended chains by inter-molecular N(amide)-H⋯O(hydr-oxy) hydrogen bonds. Additional hydrogen bonds between the water mol-ecule and three adjacent organic mol-ecules, as well ...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2006
ISSN: 1600-5368
DOI: 10.1107/s1600536806029394