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2-(4-Bromo-phen-yl)-4-(4-meth-oxy-phen-yl)-6,7,8,9-tetra-hydro-5H-cyclo-hepta-[b]pyridine.

ABSTRACT: In the title compound, C23H22BrNO, the cyclo-heptane ring adopts a chair conformation. The pyridine ring makes dihedral angles of 58.63 (15) and 8.27 (16)° with the benzene rings. The dihedral angle between the benzene rings is 56.68 (17)°. The crystal packing features C-Br⋯π inter-actions [Br⋯centroid distances= 3.813 (2) and 3.839 (2) Å; C-Br⋯centroid = 126.25 (10) and 138.31 (10)°, respectively, forming a three dimensional supramolecular architecture.

SUBMITTER: Celik I

PROVIDER: S-EPMC3685096 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Crystal structures of 2-benzyl-amino-4-(4-bromo-phen-yl)-6,7,8,9-tetra-hydro-5H-cyclo-hepta-[b]pyridine-3-carbo-nitrile and 2-benzyl-amino-4-(4-chloro-phen-yl)-6,7,8,9-tetra-hydro-5H-cyclo-hepta[b]pyridine-3-carbo-nitrile.

Project description:In the title compounds, C24H22BrN3, (I), and C24H22ClN3, (II), the 2-amino-pyridine ring is fused with a cyclo-heptane ring, which adopts a half-chair conformation. The planes of the phenyl and benzene rings are inclined to that of the central pyridine ring [r.m.s. deviations = 0.0083 (1) and 0.0093 (1) Å for (I) and (II), respectively] by 62.47 (17) and 72.51 (14)°, respectively, in (I), and by 71.44 (9) and 54.90 (8)°, respectively, in (II). The planes of the aromatic rings are inclined to one another by 53.82 (17)° in (I) and by 58.04 (9)° in (II). In the crystals of both (I) and (II), pairs of N-H⋯Nnitrile hydrogen bonds link the mol-ecules, forming inversion dimers with R 2 (2)(12) ring motifs. In (I), the resulting dimers are connected through C-H⋯Br hydrogen bonds, forming sheets parallel to (10-1), and π-π inter-actions [inter-centroid distance = 3.7821 (16) Å] involving inversion-related pyridine rings, forming a three-dimensional network. In (II), the resulting dimers are connected through π-π inter-actions [inter-centroid distance = 3.771 (2) Å] involving inversion-related pyridine rings, forming a two-dimensional network lying parallel to (001).

| S-EPMC4331894 | biostudies-literature

Crystal structure of 2-benzyl-amino-4-(4-meth-oxy-phen-yl)-6,7,8,9-tetra-hydro-5H-cyclo-hepta-[b]pyridine-3-carbo-nitrile.

Project description:The title compound, C25H25N3O, comprises a 2-amino-pyridine ring fused with a cyclo-heptane ring, which adopts a chair conformation. The central pyridine ring (r.m.s. deviation = 0.013?Å) carries three substituents, viz. a benzyl-amino group, a meth-oxy-phenyl ring and a carbo-nitrile group. The N atom of the carbo-nitrile group is significantly displaced [by 0.2247?(1)?Å] from the plane of the pyridine ring, probably due to steric crowding involving the adjacent substituents. The phenyl and benzene rings are inclined to one another by 58.91?(7)° and to the pyridine ring by 76.68?(7) and 49.80?(6)°, respectively. In the crystal, inversion dimers linked by pairs of N-H?Nnitrile hydrogen bonds generate R 2 (2)(14) loops. The dimers are linked by C-H?? and slipped parallel ?-? inter-actions [centroid-centroid distance = 3.6532?(3)?Å] into a three-dimensional structure.

| S-EPMC4257429 | biostudies-literature

Crystal structure of 2-benzyl-amino-4-(4-bromo-phen-yl)-6,7-di-hydro-5H-cyclo-penta-[b]pyridine-3-carbo-nitrile.

Project description:In the title compound C22H18BrN3, the cyclo-pentane ring adopts an envelope conformation with the central methyl-ene C atom as the flap. The dihedral angles between the central pyridine ring and the pendant benzyl and and bromo-benzene rings are 82.65 (1) and 47.23 (1)°, respectively. In the crystal, inversion dimers linked by pairs of N-H⋯Nn (n = nitrile) hydrogen bonds generate R 2 (2)(12) loops. These dimers are linked by weak π-π inter-actions [centroid-centroid distance = 3.7713 (14) Å] into a layered structure.

| S-EPMC4350685 | biostudies-literature

7,8,9,10-Tetra-hydro-cyclo-hepta-[b]indol-6(5H)-one.

Project description:In the title mol-ecule, C(13)H(13)NO, the dihedral angle between the benzene and pyrrole rings is 1.05?(5)°. The cyclo-heptene ring adopts a slightly distorted boat conformation. In the crystal structure, inter-molecular N-H?O hydrogen bonds form centrosymmetric dimers. A C-H?? inter-action, involving the benzene ring, is also found in the structure.

| S-EPMC2960645 | biostudies-literature

2-Meth-oxy-4-(2-meth-oxy-phen-yl)-5,6,7,8,9,10-hexa-hydro-cyclo-octa-[b]pyridine-3-carbo-nitrile.

Project description:In the title compound, C20H22N2O2, the central pyridine ring forms a dihedral angle of 76.32?(8)° with the pseudo-axial benzene ring. The cyclo-octane ring adopts a twisted boat chair conformation. In the crystal, weak inter-molecular C-H?? inter-actions between inversion-related mol-ecules result in the formation of linear double chains along the b-axis direction.

| S-EPMC4051075 | biostudies-literature

1-Phenyl-6,7,8,9-hexa-hydro-1H,5H-cyclo-hepta-[1',2':2,3]pyrido[6,5-c]pyrazol-4-amine: a new tacrine analogue.

Project description:The title compound, C(17)H(18)N(4), contains a pyrazolopyridine system fused with a seven-membered carbocyclic ring. The pyrazole ring is coplanar with the pyridine ring, while the phenyl ring is twisted by a dihedral angle of 14.38?(14)° with respect to the pyridine ring. The seven-membered ring displays a chair conformation. The packing is stabilized by N-H?N hydrogen bonds and N-H??(arene) inter-actions.

| S-EPMC2961386 | biostudies-literature

4-(2-Fluoro-phen-yl)-2-meth-oxy-5,6,7,8,9,10-hexa-hydro-cyclo-octa-[b]pyridine-3-carbo-nitrile.

Project description:In the title compound, C19H19FN2O, the cyclo-octene ring adopts a twisted boat-chair conformation. The dihedral angle between the plane of the fluorophenyl substituent and that of the pyridine ring is 76.39?(8)°. The F and ortho-H atoms of the fluoro-benzene ring are disordered, with occupancy factors of 0.226?(5) and 0.774?(5). In the crystal, no significant inter-actions are observed between the mol-ecules beyond van der Waals contacts.

| S-EPMC4158480 | biostudies-literature

5-(5-Bromo-2-meth-oxy-phen-yl)-2-fluoro-pyridine.

Project description:In the title compound, C(12)H(9)BrFNO, the dihedral angle between the aromatic rings is 51.39?(5)°; the C atom of the meth-oxy group is close to being coplanar with its attached ring (r.m.s. deviation = 0.0172?Å] and is oriented away from the pyridine ring. In the crystal, mol-ecules inter-act by van der Waals forces.

| S-EPMC3435681 | biostudies-literature

(5-Bromo-2-meth-oxy-phen-yl)(4-ethyl-cyclo-hex-yl)methanone.

Project description:In the title compound, C(16)H(21)BrO(2), the cyclo-hexane ring is in a chair conformation and its least-squares plane is at an angle of 61.3?(9)° to the benzene ring. The crystal packing is stabilized by weak ?-? stacking inter-actions [centroid-centroid distance = 3.697?(9)?Å] between the bromo-meth-oxy-phenyl rings of neighbouring mol-ecules.

| S-EPMC3089268 | biostudies-literature

2,5-Dimethyl-7,8,9,10-tetra-hydro-cyclo-hepta-[b]indol-6(5H)-one.

Project description:In the title mol-ecule, C(15)H(17)NO, the dihedral angle between the benzene and pyrrole rings is 1.45?(13)°. The cyclo-heptene ring adopts a slightly distorted boat conformation. In the crystal structure, inter-molecular C-H?O hydrogen bonds are found.

| S-EPMC3009033 | biostudies-literature

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