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2-Amino-4-methyl-pyridinium 3-hy-droxy-benzoate.

ABSTRACT: In the title salt, C6H9N2 (+)·C7H5O3 (-), the anion is essentially planar, with a dihedral angle of 2.72?(17)° between the benzene ring and the carboxyl-ate group. In the crystal, the anions are connected by O-H?O hydrogen bonds, forming a 41 helical chain along the c axis. The protonated N atom and the 2-amino group of the cation are hydrogen bonded to the carboxyl-ate O atoms of the anion via a pair of N-H?O hydrogen bonds with an R 2 (2)(8) ring motif. The ion pairs are further connected via another N-H?O hydrogen bond, resulting in a three-dimensional network.

SUBMITTER: Khalib NC

PROVIDER: S-EPMC3770390 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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2-Amino-4-methyl-pyridinium 3-hy-droxy-benzoate.

Khalib Nuridayanti Che NC Thanigaimani Kaliyaperumal K Arshad Suhana S Razak Ibrahim Abdul IA

Acta crystallographica. Section E, Structure reports online 20130619 Pt 7

In the title salt, C6H9N2 (+)·C7H5O3 (-), the anion is essentially planar, with a dihedral angle of 2.72 (17)° between the benzene ring and the carboxyl-ate group. In the crystal, the anions are connected by O-H⋯O hydrogen bonds, forming a 41 helical chain along the c axis. The protonated N atom and the 2-amino group of the cation are hydrogen bonded to the carboxyl-ate O atoms of the anion via a pair of N-H⋯O hydrogen bonds with an R 2 (2)(8) ring motif. The ion pairs are further connected via ...[more]

PMID: 24046675

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2-Amino-4-methyl-pyridinium 2-hy-droxy-benzoate.

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Project description:In the title compound, C(5)H(6)BrN(2) (+)·C(7)H(5)O(3) (-), the 2-amino-5-bromo-pyridinium cation and 2-hy-droxy-benzoate anion are essentially planar with maximum deviations of 0.020?(1) and 0.018?(2)?Å, respectively. The anion is stabilized by an intra-molecular O-H?O hydrogen bond, which generates an S(6) ring motif. In the crystal, the cations and anions are linked by N-H?O hydrogen bonds into chains propagating along [010]. The chains contain R(2) (2)(8) ring motifs. The structure is further stabilized by ?-? stacking inter-actions [centroid-centroid distances = 3.4908?(10) and 3.5927?(10)?Å] and also features short Br?O contacts [2.9671?(13)?Å].

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Project description:In the title hydrated salt, C(6)H(9)N(2)O(+)·C(14)H(9)O(3) (-)·H(2)O, the dihedral angle between the benzene rings of the 2-benzoyl-benzoate anion is 82.04 (14)°, while the angles between the aromatic ring of the pyridinium cation and each of the benzene rings of the anion are 4.42 (14) and 82.04 (14)°. In the crystal, mol-ecules are linked by N-H⋯O and O-H⋯O hydrogen bonds, generating a three-dimensional network with R(2) (2)(8), R(6) (6)(16) and R(4) (4)(6) motifs. The crystal packing is further stabilized by two π-π inter-actions, one between pyridinium rings, and another between the benzene benzoate and pyridinium rings of neighbouring mol-ecules, with centroid-to-centroid distances of 3.559 (2) and 3.606 (2) Å, respectively.

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Project description:In the title mol-ecular salt, C(5)H(8)N(3) (+)·C(7)H(5)O(3) (-), the 2,3-diamino-pyridinium cation is essentially planar, with a maximum deviation of 0.006 (2) Å. In the crystal, adjacent cations and anions are linked by pairs of N-H⋯O hydrogen bonds, generating R(2) (2)(8) loops. These dimers are linked by further N-H⋯O hydrogen bonds and C-H⋯O inter-actions to form sheets lying parallel to (001). A typical intra-molecular O-H⋯O hydrogen bond is also observed in the salicylate (2-hy-droxy-benzoate) anion, which generates an S(6) ring. The crystal structure also features π-π stacking inter-actions between the pyridinium rings of the cations, with a centroid-centroid distance of 3.5896 (15) Å.

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