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2-Amino-5-cyano-pyridinium chloride.

ABSTRACT: In the crystal structure of the title compound, C(6)H(6)N(3) (+)·Cl(-), cohesion is maintained by cation-anion N-H⋯Cl and cation-cation N-H⋯N hydrogen bonds, which link the ions into a three-dimensional network.

SUBMITTER: Wen XC

PROVIDER: S-EPMC2962091 | biostudies-literature |

REPOSITORIES: biostudies-literature

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4-Cyano-pyridinium chloride.

Project description:In the crystal structure of the title salt, C(6)H(5)N(2) (+)·Cl(-), the pyridinium cation links to the Cl(-) anion via an N-H?Cl hydrogen bond. Weak C-H?Cl inter-actions also occur.

| S-EPMC3379218 | biostudies-literature

2-Amino-5-cyano-pyridinium nitrate.

Project description:In the title compound, C(6)H(6)N(3) (+)·NO(3) (-), the packing is consolidatedby N-H?N and N-H?O hydrogen bonds.

| S-EPMC2959316 | biostudies-literature

2-Amino-4,6-dimethyl-pyridinium chloride dihydrate.

Project description:In the title hydrated mol-ecular salt, C(7)H(11)N(2) (+)·Cl(-)·2H(2)O, the pyridine N atom of the 2-amino-4,6-dimethyl-pyridine mol-ecule is protonated. The cation is essentially planar, with a maximum deviation of 0.006?(2)?Å. In the crystal, the components are linked by N-H?O, N-H?Cl and O-H?Cl hydrogen bonds, thereby forming sheets lying parallel to (100). The crystal structure is further stabilized by aromatic ?-? stacking inter-actions between the pyridinium rings [centroid-centroid distance = 3.4789?(9)?Å].

| S-EPMC3201217 | biostudies-literature

2-(Benzoyl-amino-meth-yl)pyridinium chloride.

Project description:The title compound, C(13)H(13)N(2)O(+)·Cl(-), (1), was obtained as a colorless crystalline by-product during the synthesis of N-(2-pyridylmeth-yl)benzoyl-amine (2). The C-O bond length of 1.231 (2) Å in the benzoyl unit of (1) is slightly elongated in comparison with isolated C=O double bonds as also observed for (2) [1.237 (2) Å]. The N-C bond length of 1.345 (2) Å in the benzoic acid amide unit indicates the formation of an allylic O-C-N system and is very similar to the N-C bond lengths [1.345 (2) Å] of the pyridyl group. A further delocalization of charge from this allylic system into the phenyl fragment does not occur, which can be deduced from a characterisitc C-C single bond length of 1.499 (2) Å between these fragments. A dimer is formed via N-H⋯Cl hydrogen bonds. The two rings make a dihedral angle of 105.0 (2)°

| S-EPMC2959924 | biostudies-literature

2-Amino-6-(2,6-difluoro-benzamido)-pyridinium chloride.

Project description:In the cation of the title compound, C(12)H(10)F(2)N(3)O(+)·Cl(-), the dihedral angle between the pyridine and benzene rings is 16.1?(1)°. In the crystal structure, mol-ecules linked into two-dimensional sheets parallel to the bc plane by inter-molecular N-H?Cl, C-H?Cl and C-H?F hydrogen bonds.

| S-EPMC3007299 | biostudies-literature

2-Amino-3-carb-oxy-pyridinium chloride hemihydrate.

Project description:The asymmetric unit of the title compound, C(6)H(7)N(2)O(2) (+)·Cl(-)·0.5H(2)O, consists of two protonated 2-amino-3-carb-oxy-pyridine cations, two chloride anions and one mol-ecule of water. The crystal packing can be described as alternating layers of cations and anions parallel to (110), which are linked together by O(w)-H?Cl inter-actions. In the crystal, four types of classical hydrogen bonds are observed, viz. cation-anion (O-H?Cl and N-H?Cl), cation-cation (N-H?O), cation-water (N-H?O(w)) and water-anion (O(w)-H?Cl), resulting in the formation of an infinite three-dimensional network.

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4-Cyano-pyridinium nitrate.

Project description:The title compound, C(6)H(5)N(2) (+)·NO(3) (-), is a proton-transfer compound between 4-cyano-pyridine and nitric acid. In the asymmetric unit, the components are linked by a strong N-H?O hydrogen bond. In the crystal, mol-ecules are linked into a C(6) chain along [010] by C-H?O inter-actions.

| S-EPMC3379290 | biostudies-literature

4-Cyano-pyridinium bromide.

Project description:In the title compound, C(6)H(5)N(2) (+)·Br(-), the pyridine N atom is protonated and involved in an inter-molecular N-H?Br hydrogen bond which, together with weak C-H?N hydrogen bonds, results in the formation of a chain along the c axis. Weak inter-molecular C-H?Br inter-actions between pyridine H atoms and Br(-) anions connect these chains into a network parallel to the bc plane.

| S-EPMC3379399 | biostudies-literature

1-(5-Amino-2,4-dinitro-phen-yl)pyridinium chloride monohydrate.

Project description:In the cation of the title hydrated salt, C(11)H(9)N(4)O(4) (+)·Cl(-)·H(2)O, the six-membered rings are inclined to each other at 79.0?(1)° and an intra-molecular N-H?O hydrogen bond occurs. In the crystal, N-H?Cl hydrogen bonds link two cations and two anions into centrosymmetric group, and O-H?Cl hydrogen bonds involving the water mol-ecules further link these groups into chains in [101]. An O-H?O inter-action is also present. The water mol-ecule is disordered over two sets of sites in a 0.555?(13):0.445?(13) ratio.

| S-EPMC3470313 | biostudies-literature

2-Amino-5-(1H-tetra-zol-5-yl)pyridinium chloride.

Project description:In the title salt, C(6)H(7)N(6) (+)·Cl(-), there are two organic cations with similar conformations and two chloride anions in the asymmetric unit. The pyridine and tetra-zole rings are essentially coplanar in each cation, with dihedral angles of 4.94?(15) and 5.41?(14)°. The pyridine N atoms are protonated. The crystal packing is stabilized by N-H?N and N-H?Cl hydrogen bonds, forming an infinite sheets parallel to the (101).

| S-EPMC2959660 | biostudies-literature

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