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

ABSTRACT: 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.

SUBMITTER: Qian HF

PROVIDER: S-EPMC2983737 | biostudies-literature | 2010 Feb

REPOSITORIES: biostudies-literature

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

Qian Hui-Fen HF Huang Wei W

Acta crystallographica. Section E, Structure reports online 20100227 Pt 3

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. ...[more]

PMID: 21580436

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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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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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3-Hy-droxy-2-(hy-droxy-meth-yl)pyridinium chloride.

Project description:The cation of the title compound, C(6)H(8)NO(2) (+)·Cl(-), is essentially planar (r.m.s. deviation = 0.0104?Å). Intermolecular O-H?Cl and N-H?Cl hydrogen bonds, as well as C-H?O contacts, connect the mol-ecules in the crystal structure. A short C?C distance of only 3.3930?(19)?Å between C atoms of neighbouring rings is indicative of ?-stacking. The corresponding centroid-centroid distance between the two aromatic systems is 4.2370?(7)?Å due to the small overlap of the adjacent rings.

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4-[(Adamantan-1-yl)carbamo-yl]pyridinium chloride.

Project description:In the title salt, C(16)H(21)N(2)O(+)·Cl(-), the amide group makes a dihedral angle of 24.98?(2)° with respect to the pyridinium ring. In the crystal, both the amide and pyridinium N atoms are involved in N-H?Cl hydrogen bonding. Weak inter-molecular C-H?Cl and C-H?O inter-actions also occur.

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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.

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

Project description: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.

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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.

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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.

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4-(1H-Tetra-zol-5-yl)pyridinium chloride.

Project description:In the cation of the title compound, C(6)H(6)N(5) (+)·Cl(-), the tetra-zole and pyridine rings are nearly coplanar, making a dihedral angle of 5.58?(11)°. The organic cations are linked to the chloride anions via N-H?Cl hydrogen bonds, forming chains along [110].

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3-(1H-Tetra-zol-5-yl)pyridinium chloride.

Project description:In the cation of the title compound, C(6)H(6)N(5) (+)·Cl(-), the pyridinium and tetra-zole rings are nearly coplanar, making a dihedral angle of 5.05 (12)°. The cations and anions are connected by inter-molecular N-H⋯Cl hydrogen bonds, forming a centrosymmetric [2 + 2] aggregate. The aggregates are stacked along the a axis.

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