Crystal structure of 4-hydroxypyridin-1-ium 3,5-dicarboxybenzoate
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چکیده
منابع مشابه
Crystal structure of 4-hydroxypyridin-1-ium 3,5-dicarboxybenzoate
The structure of the title salt, C5H6NO(+)·C9H5O6 (-), (I), shows that 4-hy-droxy-pyridine has abstracted an H atom from benzene-1,3,5-tri-carb-oxy-lic acid, yielding a pyridinium cation and carboxyl-ate anion. The two ions form an extensive three-dimensional hydrogen-bonded network throughout the crystal. The hydrogen bonds that comprise the core of the network are considered strong, with O-H⋯...
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In the anhydrous salt formed from the reaction of morpholine with cinnamic acid, C4H10NO(+)·C9H7O2 (-), the acid side chain in the trans-cinnamate anion is significantly rotated out of the benzene plane [C-C-C- C torsion angle = 158.54 (17)°]. In the crystal, one of the the aminium H atoms is involved in an asymmetric three-centre cation-anion N-H⋯(O,O') R 1 (2)(4) hydrogen-bonding inter-action...
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The title mol-ecule, C17H15ClN2O2, is L-shaped with the 4-chloro-benzyl-idene ring almost coplanar with the planar pyrazolidine ring (r.m.s. deviation = 0.020 Å), making a dihedral angle of 4.83 (17)°. The 4-meth-oxy-phenyl ring is almost normal to the mean plane of the pyrazolidine ring and the 4-chloro-benzyl-idene ring, with dihedral angles of 87.36 (17) and 89.23 (16)°, respectively. The py...
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The title compound, C12H18N4O2, crystallizes in the zwitterionic form with protonation at the N atom of the piperazine ring bearing the carboxylate group. The piperazine ring adopts a slightly distorted chair conformation. In the crystal, N-H⋯O hydrogen bonds are observed, forming chains along [010]. The packing is consolidated by C-H⋯O inter-actions, which generate a three-dimensional network.
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Crystallographic Communications
سال: 2015
ISSN: 2056-9890
DOI: 10.1107/s2056989015011780