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2-Amino-5-chloro-pyridinium nitrate.

ABSTRACT: The title structure, C(5)H(6)ClN(2) (+)·NO(3) (-), is held together by extensive hydrogen bonding between the NO(3) (-) ions and 2-amino-5-chloro-pyridinium H atoms. The cation-anion N-H?O hydrogen bonds link the ions into a zigzag- chain which develops parallel to the b axis. The structure may be compared with that of the related 2-amino-5-cyano-pyridinium nitrate.

SUBMITTER: Zaouali Zgolli D

PROVIDER: S-EPMC2971019 | biostudies-literature | 2009 Oct

REPOSITORIES: biostudies-literature

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2-Amino-5-chloro-pyridinium nitrate.

Zaouali Zgolli Donia D Boughzala Habib H Driss Ahmed A

Acta crystallographica. Section E, Structure reports online 20091017 Pt 11

The title structure, C(5)H(6)ClN(2) (+)·NO(3) (-), is held together by extensive hydrogen bonding between the NO(3) (-) ions and 2-amino-5-chloro-pyridinium H atoms. The cation-anion N-H⋯O hydrogen bonds link the ions into a zigzag- chain which develops parallel to the b axis. The structure may be compared with that of the related 2-amino-5-cyano-pyridinium nitrate. ...[more]

PMID: 21578349

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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.

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2-Amino-5-methyl-pyridinium nitrate.

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Project description:In the title molecular salt, C(5)H(6)ClN(2) (+)·C(7)H(6)NO(2) (-), the cations and anions are connected by cation-to-anion and anion-to-anion N-H?O hydrogen bonds into a three-dimensional network. The dihedral angle between the ring and the CO(2) group in the anion is 7.14?(7)°.

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2-Amino-5-chloro-pyridinium salicylate.

Project description:In the crystal structure of the title salt, C(5)H(6)ClN(2) (+)·C(7)H(5)O(3) (-), the protonated N atom and the 2-amino group of the cation are hydrogen bonded to the carboxyl-ate O atoms via a pair of N-H⋯O hydrogen bonds, forming R(2) (2)(8) ring motifs. These motifs are centrosymmetrically paired via N-H⋯O hydrogen bonds, forming a complementary donor-donor-acceptor-acceptor (DDAA) array. A typical intra-molecular O-H⋯O hydrogen bond is also observed in the salicylate anion. The crystal structure is further stabilized by weak C-H⋯π inter-actions.

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Project description:In the crystal structure of the title compound, C(6)H(7)N(2)O(2) (+)·NO(3) (-), the cations are linked via C-H?O hydrogen bonds, forming infinite chains running along the b axis. These chains are further linked through N-H?O, O-H?O and C-H?O hydrogen bonds to the nitrate anions, forming well-separated infinite planar layers parallel to (001).

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2-Amino-5-chloro-pyridinium trifluoro-acetate.

Project description:The asymmetric unit of the title salt, C(5)H(6)ClN(2) (+)·C(2)F(3)O(2) (-), contains two independent 2-amino-5-chloro-pyridinium cations and two independent trifluoro-acetate anions. The F atoms of both anions are disordered over two sets of positions, with occupancy ratios of 0.672 (12):0.328 (12) and 0.587 (15):0.413 (15). In the crystal, the cations and anions are linked via N-H⋯O and C-H⋯O hydrogen bonds, forming a two-dimensional network parallel to (001).

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Project description:In the title salt, C(5)H(6)ClN(2) (+)·C(4)H(5)O(4) (-), the pyridine N atom is protonated. The pyridinium and amino groups associate via a pair of N-H⋯O hydrogen bonds to the carboxyl-ate O atoms of the singly deprotonated succinate anion. The hydrogen succinate anions self-assemble via O-H⋯O hydrogen bonds into chains along the b axis. The crystal structure is further stabilized by additional N-H⋯O hydrogen bonds involving the second amino H atoms, as well as C-H⋯O contacts, forming a three-dimensional network.

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2-Amino-6-(quinoline-2-carboxamido)-pyridinium nitrate.

Project description:In the title salt, C(15)H(13)N(4)O(+)·NO(3) (-), an extensive network of N-H⋯N, N-H⋯O and C-H⋯O hydrogen-bond inter-actions are observed throughout the structure. Further stabilization is obtained by π-π stacking inter-actions between inversion-related quinoline systems and inversion-related pyridine rings, with respective centroid-centroid distances of 3.5866 (6) and 3.3980 (6) Å.

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2-Acetyl-pyridinium 3-amino-2-chloro-pyridinium tetra-chloridocobaltate(II).

Project description:In the title complex, (C(5)H(6)ClN(2))(C(7)H(8)NO)[CoCl(4)], the Co(II) ions are tetra-hedrally coordinated. The crystal structure is built from hydrogen-bonded centrosymmetric tetra-mers of tetra-chloridocobaltate(II) dianions and 3-amino-2-chloro-pyridinium cations, additionally strengthened by significant ?-? stacking of pyridinium rings [interplanar distance 3.389?(3)?Å]. The tetra-mers are linked by N-H?Cl hydrogen bonds into chains; the second kind of cations, viz. 2-acetyl-pyridinium, are connected by N-H?Cl hydrogen bonds to both sides of the chain. The Co-Cl bond lengths in the dianion correlate with the number of hydrogen bonds accepted by the Cl atom. An intramolecular C-H?Cl interaction is also present.

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2-Amino-5-methyl-pyridinium 4-chloro-benzoate.

Project description:The 4-chloro-benzoate anion of the title salt, C6H9N2(+)·C7H4ClO2(-), is nearly planar with a dihedral angle of 5.14?(16)° between the benzene ring and the carboxyl-ate group. In the crystal, 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 R2(2)(8) ring motif. The ion pairs are further connected via N-H?O and weak C-H?O hydrogen bonds, forming a two-dimensional network parallel to the bc plane. The crystal structure also features a ?-? stacking inter-action between the pyridinium and benzene rings with a centroid-centroid distance of 3.7948?(9)?Å.

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