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4-(Ammonio-meth-yl)pyridinium dichloride.

ABSTRACT: The title compound, C(6)H(10)N(2) (2+)·2Cl(-), contains a network of 4-(ammonio-meth-yl)pyridinium cations and chloride anions which are inter-connected by N-H?Cl hydrogen bonds. The crystal packing is also influenced by inter-molecular ?-? stacking inter-actions between identical anti-parallel organic cations with a face-to-face distance of ca 3.52?Å.

SUBMITTER: El Glaoui M

PROVIDER: S-EPMC2959502 | biostudies-literature | 2008 Oct

REPOSITORIES: biostudies-literature

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4-(Ammonio-meth-yl)pyridinium dichloride.

El Glaoui Meher M Kefi Riadh R Amri Olfa O Jeanneau Erwann E Ben Nasr Cherif C

Acta crystallographica. Section E, Structure reports online 20081025 Pt 11

The title compound, C(6)H(10)N(2) (2+)·2Cl(-), contains a network of 4-(ammonio-meth-yl)pyridinium cations and chloride anions which are inter-connected by N-H⋯Cl hydrogen bonds. The crystal packing is also influenced by inter-molecular π-π stacking inter-actions between identical anti-parallel organic cations with a face-to-face distance of ca 3.52 Å. ...[more]

PMID: 21581062

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Redetermination of 3-(ammonio-meth-yl)pyridinium dichloride.

Project description:The crystal structure of the title compound, C(6)H(10)N(2) (2+)·2Cl(-), has been reported previously in the non-standard setting P2(1)/a [Genet (1965 ?). Bull. Soc. Fr. Miner. Crist.88, 463-470], with an R value of 0.16. The current redetermination improves significantly the precision of the geometric parameters. In the crystal packing, cations and anions are linked by inter-molecular N-H?Cl and C-H?Cl hydrogen bonds into a three-dimensional network.

| S-EPMC2977397 | biostudies-literature

3-(Ammonio-meth-yl)pyridinium dibromide.

Project description:In the title salt, C(6)H(10)N(2) (2+)·2Br(-), the non-H atoms of the 3-methyl-pyridinium unit of the cation are almost coplanar (r.m.s. deviation = 0.0052?Å). In the crystal, the dications and Br anions are linked by a combination of six hydrogen bonds, viz. one N(py)-H?Br, two C-H?Br and three H(2)N-H?Br, into supra-molecular layers, parallel to the bc plane, composed of alternating R(2) (4)(10) and R(2) (4)(8) loops. Weak ?-? inter-actions between cationic rings with centroid-centroid distances of 3.891?(2)?Å are also observed.

| S-EPMC3515173 | biostudies-literature

2-(Ammonio-meth-yl)pyridinium sulfate monohydrate.

Project description:In the crystal of the title hydrated molecular salt, C(6)H(10)N(2) (2+)·SO(4) (2-)·H(2)O, N-H⋯O and O-H⋯O hydrogen bonds link the mol-ecules into layers parallel to the ab plane. C-H⋯O hydrogen bonds are observed both within these layers and between mol-ecules and ions in adjacent layers.

| S-EPMC3297955 | biostudies-literature

4-Amino-3-ammonio-pyridinium dichloride.

Project description:The anions and cations of the title compound, C(5)H(9)N(3) (2+)·2Cl(-), are connected by two chloride-bridged three-centered N-H?Cl hydrogen bonds into a three-dimensional network. The aromatic rings are not involved in stacking inter-actions.

| S-EPMC2968050 | biostudies-literature

2-Amino-3-ammonio-pyridinium dichloride.

Project description:The asymmetric unit of the title compound, C(5)H(9)N(3) (2+)·2Cl(-), contains two diprotonated 2,3-diamino-pyridine cations and four chloride anions. In the crystal structure, the anions and cations are connected by inter-molecular N-H?Cl and C-H?Cl hydrogen bonds, forming a three-dimensional network. The crystal structure is further stabilized by ?-? inter-actions between pyridinium rings [centroid-centroid distance = 3.695?(1)?Å].

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4-Ammonio-benzamidinium dichloride.

Project description:The crystal structure of the title compound, C(7)H(11)N(3) (2+)·2Cl(-), has been determined as part of a project focusing on the ability of the benzamidine system to form strong hydrogen bonds in aqueous media. It is commonly used as a ligand in affinity chromatography for purification and immobilization of enzymes. A twofold rotation axis runs along the axis of the cation. The orientation of the amidinium group with respect to the benzene ring is indicated by the N-C-C-C torsion angle of 40.2 (1)°. In the crystal structure, cations and anions are linked via hydrogen bonds. The chloride anion is surrounded by four ammonium cations in a tetra-hedral environment. The aromatic rings of the amidinium cations are π-stacked, with a centroid-centroid distance of 4.178 (1) Å.

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2-(Dihydroxy-meth-yl)pyridinium chloride.

Project description:In the title compound, C(6)H(8)NO(2) (+)·Cl(-), inter-molecular O-H?Cl and N-H?Cl hydrogen bonds are observed in which each chloride anion links three adjacent cations into a hydrogen-bond network.

| S-EPMC2983737 | biostudies-literature

2-(Hydroxy-meth-yl)pyridinium chloride.

Project description:In the title molecular salt, C(6)H(8)NO(+)·Cl(-), the packing is consolidated by N-H⋯Cl and O-H⋯Cl hydrogen bonds, resulting in the formation of [010] chains of alternating cations and anions.

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Pyridinium 4-(trifluoro-meth-yl)benzene-sulfonate.

Project description:The title salt, C(5)H(6)N(+)·C(7)H(4)F(3)O(3)S(-), is an ion pair in which the pyridium cation is linked to the 4-(trifluoro-meth-yl)benzene-sulfonate anion by an N-H?O hydrogen bond. The F atoms of the trifluoro-methyl group are disordered over two sites in a 0.584?(9):0.416?(9) ratio.

| S-EPMC2977346 | 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)°

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