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2-Chloro-5-nitro-pyridine.

ABSTRACT: The non-H atoms of the title compound, C(5)H(3)ClN(2)O(2), almost lie in a common plane (r.m.s. deviation = 0.090 Å). In the crystal, adjacent mol-ecules feature a short Cl⋯O contact [3.068 (4) Å], forming a chain; these chains are consolidated into a layer structure by non-classical C-H⋯O inter-actions.

SUBMITTER: Ng SW

PROVIDER: S-EPMC2983943 | biostudies-literature |

REPOSITORIES: biostudies-literature

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2-Chloro-3-nitro-pyridine.

Project description:In the title compound, C(5)H(3)ClN(2)O(2), the nitro group is twisted by 38.5?(2)° with respect to the pyridine ring. In the crystal, adjacent mol-ecules are linked by non-classical C-H?N and C-H?O hydrogen bonds, forming a layer motif.

| S-EPMC2979275 | biostudies-literature

2-Chloro-5-methyl-3-nitro-pyridine.

Project description:The title compound, C(6)H(5)ClN(2)O(2), crystallizes with two independent mol-ecules in the asymmetric unit. Inter-molecular C-H?O hydrogen bonds stabilize the crystal structure.

| S-EPMC3247518 | biostudies-literature

Crystal structure of 2,6-di-chloro-4-nitro-pyridine N-oxide.

Project description:In the title compound, C5H2Cl2N2O3, the nitro group is essentially coplanar with the aromatic ring, with a twist angle of 4.00 (6)° and a fold angle of 2.28 (17)°. The crystal structure exhibits a herringbone pattern with the zigzag running along the b axis. The herringbone layer-to-layer distance is 3.0075 (15) Å, with a shift of 5.150 (4) Å. Neighboring mol-ecules are tilted at a 57.83 (4)° (ring-to-ring) angle with each other. The nitro group on one mol-ecule points to the N-oxide group on the neighboring one, with an inter-molecular O⋯N(nitro) distance of 3.1725 (13) Å.

| S-EPMC4647420 | biostudies-literature

2-Chloro-5-(chloro-meth-yl)pyridine.

Project description:The title compound, C(6)H(5)Cl(2)N, is almost planar, with an r.m.s. deviation of 0.0146 Å for all atoms except for the 5-choloromethyl Cl atom. The offset Cl atom lies above this plane with a Cl-C-C angle of 111.11 (17)°. In the crystal, mol-ecules are connected via inter-molecular C-H⋯N hydrogen bonds, forming dimers.

| S-EPMC3051559 | biostudies-literature

2-Iodo-3-nitro-pyridine.

Project description:In the crystal structure of the title compound, C(5)H(3)IN(2)O(2), inter-molecular C-H?N hydrogen-bonding inter-actions link the mol-ecules into one-dimensional chains along the b axis.

| S-EPMC2969583 | biostudies-literature

2,6-Dichloro-3-nitro-pyridine.

Project description:The asymmetric unit of the title compound, C(5)H(2)Cl(2)N(2)O(2), consists of two crystallographically independent mol-ecules. The pyridine ring in each mol-ecule is essentially planar, with maximum deviations of 0.004?(4) and 0.007?(4)?Å. Short Cl?O [3.09?(3) and 3.13?(4)?Å] and Cl?Cl [3.38?(12)?Å] contacts were observed. No significant inter-molecular inter-actions were observed in the crystal packing.

| S-EPMC3152078 | biostudies-literature

2-(2-Fluoro-4-nitro-phen-oxy)-3-nitro-pyridine.

Project description:In the title compound, C11H6FN3O5, the dihedral angle between the aromatic rings is 72.4?(3)°. The NO2 groups form dihedral angles of 40.8?(2) and 4.8?(2)°, respectively, with the attached pyridine and benzene rings. The crystal structure features ?-? stacking between centrosymmetrically related pairs of pyridine rings [centroid-centroid separation = 3.800?(3)?Å].

| S-EPMC3914119 | biostudies-literature

Crystal structures of 3-chloro-2-nitro-benzoic acid with quinoline derivatives: 3-chloro-2-nitro-benzoic acid-5-nitro-quinoline (1/1), 3-chloro-2-nitro-benzoic acid-6-nitro-quinoline (1/1) and 8-hy-droxy-quinolinium 3-chloro-2-nitro-benzoate.

Project description:The structures of three compounds of 3-chloro-2-nitro-benzoic acid with 5-nitro-quinoline, (I), 6-nitro-quinoline, (II), and 8-hy-droxy-quinoline, (III), have been determined at 190 K. In each of the two isomeric compounds, (I) and (II), C7H4ClNO4·C9H6N2O2, the acid and base mol-ecules are held together by O-H⋯N and C-H⋯O hydrogen bonds. In compound (III), C9H8NO+·C7H3ClNO4 -, an acid-base inter-action involving H-atom transfer occurs and the H atom is located at the N site of the base mol-ecule. In the crystal of (I), the hydrogen-bonded acid-base units are linked by C-H⋯O hydrogen bonds, forming a tape structure along the b-axis direction. Adjacent tapes, which are related by a twofold rotation axis, are linked by a third C-H⋯O hydrogen bond, forming wide ribbons parallel to the (03) plane. These ribbons are stacked via π-π inter-actions between the quinoline ring systems [centroid-centroid distances = 3.4935 (5)-3.7721 (6) Å], forming layers parallel to the ab plane. In the crystal of (II), the hydrogen-bonded acid-base units are also linked into a tape structure along the b-axis direction via C-H⋯O hydrogen bonds. Inversion-related tapes are linked by further C-H⋯O hydrogen bonds to form wide ribbons parallel to the (08) plane. The ribbons are linked by weak π-π inter-actions [centroid-centroid distances = 3.8016 (8)-3.9247 (9) Å], forming a three-dimensional structure. In the crystal of (III), the cations and the anions are alternately linked via N-H⋯O and O-H⋯O hydrogen bonds, forming a 21 helix running along the b-axis direction. The cations and the anions are further stacked alternately in columns along the a-axis direction via π-π inter-actions [centroid-centroid distances = 3.8016 (8)-3.9247 (9) Å], and the mol-ecular chains are linked into layers parallel to the ab plane through these inter-actions.

| S-EPMC6775735 | biostudies-literature

2-Chloro-pyridine-3-carboxamide.

Project description:In the crystal structure of the title compound, C(6)H(5)ClN(2)O, the dihedral angle between the pyridine ring and the carboxamine group is 63.88?(8)°. Inter-molecular N-H?N and N-H?O hydrogen bonds link the mol-ecules into a two-dimensional network.

| S-EPMC2968229 | biostudies-literature

2-(4-Chloro-anilino)pyridine.

Project description:The two aromatic rings of each of the four independent molecules in the asymmetric unit of the title compound, C(11)H(9)ClN(2), are approximately coplanar; the four mol-ecules are arranged into two amino-pyridyl N-H⋯N hydrogen-bonded pairs. The structure has a 15% twin component related by a twofold rotation about [100].

| S-EPMC2960521 | biostudies-literature

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