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

ABSTRACT: In the title mol-ecule, C(12)H(10)N(2)O(4), the pyridine and benzene rings are almost orthogonal [dihedral angle = 86.69 (11)°], with the pyridine N atom directed towards the centre of the benzene ring. The -NO(2) [O-N-C-C = -26.1 (3)°] and -OMe [C-O-C-C = 166.5 (2)°] substituents are not coplanar with their respective aromatic rings. In the crystal, supra-molecular layers in the ab plane are formed via C-H⋯π inter-actions involving methyl H atoms and the pyridine and benzene rings. Short N-O⋯π contacts (where the π-system is derived from the pyridine ring) occur between layers in the c-axis direction.

SUBMITTER: Nasir SB

PROVIDER: S-EPMC3007986 | biostudies-literature |

REPOSITORIES: biostudies-literature

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2-(2-Meth-oxy-phen-oxy)-3-nitro-pyridine.

Project description:In the title compound, C(12)H(10)N(2)O(4), the pyridine and benzene rings are almost orthogonal, forming a dihedral angle of 86.63?(6)°. Each of the nitro [O-N-C-C torsion angle = -6.45?(19)°] and meth-oxy [C-O-C-C torsion angle = 179.69?(11)°] groups is almost coplanar with the ring to which it is connected. Mol-ecules are consolidated in the crystal structure via C-H?O inter-actions, forming a three-dimensional network.

| S-EPMC3238845 | biostudies-other

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

4-Meth-oxy-N-(4-meth-oxy-2-nitro-phen-yl)benzamide.

Project description:In the title compound, C(15)H(14)N(2)O(5), the central amide C-C(=O)-N-C unit forms dihedral angles of 28.17?(13) and 26.47?(13)° with the two benzene rings, whereas the two benzene rings are almost coplanar, making a dihedral angle of 4.52?(13)°. The two meth-oxy and the nitro substituents are almost coplanar with their attached benzene rings, with C-O-C-C torsion angles of -1.3?(4) and -4.6?(4)°, and an O-N-C-C torsion angle of 17.1?(3)°. In the crystal, mol-ecules are linked via C-H?O and N-H?O inter-actions, forming a tape running along the b axis.

| S-EPMC3470382 | biostudies-literature

2-(4-Methyl-phen-oxy)-5-nitro-pyridine.

Project description:The title mol-ecule, C(12)H(10)N(2)O(3), is twisted, the dihedral angle between the rings being 61.16?(13)°. The nitro group is approximately coplanar with the pyridine ring to which it is attached [O-N-C-C torsion angle = -178.1?(3)°]. Supra-molecular chains along [010] and mediated by C-H?O and ?-? [centroid(pyrid-yl)-(benzene) distance = 3.8259?(18)?Å] contacts feature in the crystal packing.

| S-EPMC3247466 | biostudies-literature

1-(2-Meth-oxy-phen-yl)-2-{[2-(2-meth-oxy-phen-yl)hydrazinyl-idene](nitro)-meth-yl}diazene.

Project description:In the title compound, C(15)H(15)N(5)O(4), a nitro-formazan derivative, the formazan unit is essentially planar with an r.m.s. deviation of 0.0204?(6)?Å and adopts a closed syn,s-cis configuration with an intra-molecular N-H?N hydrogen bond. The formazan plane makes dihedral angles of 4.32?(5) and 24.35?(5)° with the benzene rings. The dihedral angle between the formazan plane and the nitro group is 12.58?(8)°. In the crystal, C-H?O inter-actions connect the mol-ecules into an inversion dimer.

| S-EPMC3295411 | biostudies-literature

Diisopropyl 1-(4-meth-oxy-phen-yl)-2,6-dimethyl-4-(3-nitro-phen-yl)-1,4-dihydro-pyridine-3,5-dicarboxyl-ate.

Project description:In the title compound, C(28)H(32)N(2)O(7), the 1,4-dihydro-pyridine ring adopts a flattened boat conformation. The two benzene rings are approximately perpendicular to the dihydro-pyridine ring, forming dihedral angles of 84.29?(9) and 82.96?(9)° with the mean plane of the 1,4-dihydro-pyridine unit, whereas the ester groups are only slightly twisted relative to this plane, with dihedral angles of 10.6?(1) and 9.0?(1)°.

| S-EPMC3247382 | biostudies-literature

Crystal structure of 2-(4-meth-oxy-phen-yl)-6-nitro-imidazo[1,2-a]pyridine-3-carbaldehyde.

Project description:In the title compound, C15H11N3O4, the imidazo[1,2-a] pyridine ring system is almost planar [r.m.s. deviation = 0.028?(2)?Å]. Its mean plane makes dihedral angles of 33.92?(7) and 34.56?(6)° with the meth-oxy-phenyl ring and the nitro group, respectively. The cohesion of the crystal structure is ensured by C-H?N and C-H?O hydrogen bonds, forming layers almost parallel to the ac plane.

| S-EPMC4719933 | biostudies-literature

2-[(4-Meth-oxy-2-nitro-phen-yl)imino-meth-yl]phenol.

Project description:The crystal structure of the title compound, C(14)H(12)N(2)O(4), contains four crystallographically independent mol-ecules in the asymmetric unit. All the mol-ecules have similar conformations; the dihedral angles between the aromatic rings are 33.1?(1), 33.76?(9), 31.41?(9) and 32.56?(10)°. Intra-molecular O-H?N hydrogen bonds form S(6) ring motifs in each molecule. In the crystal, there are two pairs of pseudo-inversion-related mol-ecules. Along the c axis, mol-ecules are stacked with ?-? inter-actions between the 2-hy-droxy-phenyl and 4-meth-oxy-2-nitro-phenyl rings [centroid-centroid distances = 3.5441?(12)-3.7698?(12)?Å].

| S-EPMC3414359 | biostudies-literature

1-(4-Meth-oxy-phen-yl)-4-(3-nitro-phen-yl)-3-phen-oxy-azetidin-2-one.

Project description:In the title compound, C(22)H(18)N(2)O(5), the four-membered β-lactam ring is nearly planar, with a maximum deviation of 0.023 (2) Å for the N atom, and has long C-C distances of 1.525 (5) and 1.571 (5) Å. The mean plane of this group makes dihedral angles of 11.61 (19), 74.5 (2) and 72.3 (2)° with three aromatic rings. An intra-molecular C-H⋯O hydrogen bond occurs. The packing of the mol-ecules in the crystal structure is governed mainly by inter-molecular C-H⋯O hydrogen-bonding and C-H⋯π stacking inter-actions. Furthermore, a π-π inter-action [centroid-centroid distance = 3.6129 (19) Å] helps to stabilize the crystal structure.

| S-EPMC3051763 | biostudies-literature

6-Meth-oxy-4-(2,4,5-tri-meth-oxy-phen-yl)-2,2'-bi-pyridine-5-carbo-nitrile.

Project description:In the title 3-cyano-pyridine derivative, C21H19N3O4, the 3-cyano-substituted pyridine ring forms dihedral angles of 2.35?(5) and 41.60?(5)° with the unsubstituted pyridine and 2,4,5-trimeth-oxy-substituted benzene rings, respectively. The dihedral angle between the unsubstituted pyridine and benzene rings is 39.84?(5)°. The meth-oxy groups form Cmeth-yl-O-C-(C,N) torsion angles in the range 0.80?(15)-11.45?(15)°. In the crystal, mol-ecules related by 21 screw axes are linked by weak C-H?N hydrogen bonds along [010]. In addition, weak C-H?? inter-actions and ?-? stacking inter-actions between pyridine rings, with a centroid-centroid distance of 3.6448?(6)?Å, are observed.

| S-EPMC3790375 | biostudies-literature

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