4-(4-Nitrobenzyl)pyridinium 3-carboxy-4-hydroxybenzenesulfonate
نویسندگان
چکیده
In the title salt, C(12)H(11)N(2)O(2) (+)·C(7)H(5)O(6)S(-), the dihedral angle between the benzene and pyridine rings in the 4-(4-nitro-benz-yl)pyridinium cation is 82.7 (2)°. Within the anion there is an intramolecular hydroxy-O-H⋯O(carboxylic acid) bond. In the crystal, the cation forms a single N(+)-H⋯O(sulfonate) hydrogen bond with the anion. These cation-anion pairs inter-act through duplex anion carb-oxy-lic acid O-H⋯O(sulfonate) hydrogen bonds, giving a centrosymmetric cyclic association [graph set R(2) (2)(16)]. The crystals studied were non-merohedrally twinned.
منابع مشابه
2-Amino-5-bromopyridinium 3-carboxy-4-hydroxybenzenesulfonate
The asymmetric unit of the title salt, C(5)H(6)BrN(2) (+)·C(7)H(5)O(6)S(-), contains two independent 2-amino-5-bromo-pyridinium cations and two independent 3-carb-oxy-4-hy-droxy-benzene-sulfonate anions. The hy-droxy and carboxyl groups of the anions are involved in intra-molecular O-H⋯O hydrogen bonds, which generate S(6) ring motifs. In the crystal structure, the ions are linked by N-H⋯O and ...
متن کامل2-Amino-4-methylpyridinium 3-carboxy-4-hydroxybenzenesulfonate monohydrate
In the crystal structure of the title salt, C(6)H(9)N(2) (+)·C(7)H(5)O(6)S(-)·H(2)O, the water mol-ecule acts as an acceptor of bifurcated N-H⋯O hydrogen bonds from the pyridinium H atom and one H atom of the 2-amino group, forming an R(2) (1)(6) ring. The 3-carb-oxy-4-hy-droxy-benzene-sulfonate anions self-assemble via O-H⋯O hydrogen bonds, leading to supra-molecular chains along the a axis. T...
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The asymmetric unit of the title salt, C(5)H(6)ClN(2) (+)·C(7)H(5)O(6)S(-), contains two independent 2-amino-5-chloro-pyridinium cations and two independent 3-carb-oxy-4-hy-droxy-benzene-sulfonate anions. In both anions, the O atoms of the sulfonate group are disordered over two sets of positions, with occupancy ratios of 0.47 (5):0.53 (5) and 0.50 (8):0.50 (8). In each anion, an intra-molecula...
متن کامل2-Amino-5-methylpyridinium 3-carboxy-4-hydroxybenzenesulfonate
The asymmetric unit of the title salt, C(6)H(9)N(2) (+)·C(7)H(5)O(6)S(-), contains two crystallographically independent 2-amino-5-methylpyridinium cations and two sulfosalicylate anions. In the crystal structure, the sulfonate group of each 3-carb-oxy-4-hy-droxy-benzene-sulfonate anion inter-acts with the corresponding 2-amino-5-methyl-pyridinium cation via a pair of N-H⋯O hydrogen bonds, formi...
متن کامل4-(4-Carboxy-1,3-thiazol-2-yl)pyridinium 3-carboxy-4-hydroxybenzenesulfonate dihydrate
In the crystal structure of the title compound, C(9)H(7)N(2)O(2)S(+)·C(7)H(5)O(6)S(-)·2H(2)O, an H atom from the 5-sulfosalicylic acid is transferred to the pyridyl N atom, forming a salt. The dihedral angle between the thiazole and pyridinium rings is 5.909 (5)°. The crystal packing is determined by O-H⋯O and N-H⋯O hydrogen bonds involving water mol-ecules.
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