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8-Methyl-2,3,4,9-tetra-hydro-1H-carbazol-1-one.

ABSTRACT: In the title compound, C(13)H(13)NO, the dihedral angle between the benzene ring and the fused pyrrole ring is 0.96 (7)°. The cyclohexenone ring adopts an envelope conformation. Inter-molecular N-H⋯O hydrogen bonds form R(2) (2)(10) ring motifs in the crystal structure. Weak C-H⋯π inter-actions involving the benzene ring also occur.

SUBMITTER: Archana R

PROVIDER: S-EPMC3007954 | biostudies-literature |

REPOSITORIES: biostudies-literature

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6-Meth-oxy-2,3,4,9-tetra-hydro-1H-carbazol-1-one.

Project description:The carbazole unit of the title mol-ecule, C(13)H(13)NO(2), is not planar. The dihedral angle between the benzene ring and the pyrrole ring is 1.69 (6)°. The cyclo-hexene ring adopts an envelope conformation. Inter-molecular C-H⋯O and N-H⋯O hydrogen bonds are present in the crystal structure. A C-H⋯π inter-action, involving the benzene ring, is also found in the crystal structure.

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(E)-2-[(Furan-2-yl)methyl-idene]-7-methyl-2,3,4,9-tetra-hydro-1H-carbazol-1-one.

Project description:In the title mol-ecule, C(18)H(15)NO(2), the atoms in the carbazole unit deviate from planarity [maximum deviation from mean plane = 0.1317?(12)?Å]. The pyrrole ring makes dihedral angles of 1.01?(8) and 18.56?(10)° with the benzene and furan rings, respectively. The cyclo-hexene ring adopts a half-chair conformation. In the crystal, pairs of N-H?O hydrogen bonds form an R(2) (2)(10) ring. Mol-ecules are further linked by C-H?O and C-H?? inter-actions, forming a three-dimensional network.

| S-EPMC3569219 | biostudies-literature

(E)-2-(Furan-2-yl-methyl-idene)-8-methyl-2,3,4,9-tetra-hydro-1H-carbazol-1-one.

Project description:In the title mol-ecule, C(18)H(15)NO(2), the carbazole unit is not planar [maximum deviation from mean plane = 0.236?(2)?Å]. The pyrrole ring makes dihedral angles of 1.21?(10) and 16.74?(12)° with the benzene and the furan rings, respectively. The cyclo-hexene ring adopts a half-chair conformation. In the crystal, inversion dimers linked by pairs of N-H?O hydrogen bonds generate R(2) (2)(10) loops.

| S-EPMC3011638 | biostudies-literature

(E)-6-Chloro-2-(furan-2-yl-methyl-idene)-2,3,4,9-tetra-hydro-1H-carbazol-1-one.

Project description:In the title compound, C(17)H(12)ClNO(2), the carbazole unit is nearly planar [maximum deviation = 0.052?(1)?Å]. The pyrrole ring makes dihedral angles of 1.92?(8) and 4.71?(11)° with the benzene and furan rings, respectively. Inter-molecular N-H?O hydrogen bonds form R(2) (2)(10) rings in the crystal structure.

| S-EPMC3011405 | biostudies-literature

2-(6-Methyl-2,3,4,9-tetra-hydro-1H-carbazol-1-yl-idene)propane-dinitrile.

Project description:In the title compound, C(16)H(13)N(3), the cyclo-hexene ring adopts a sofa conformation. An intra-molecular N-H⋯N hydrogen bond generates an S(7) ring motif. In the crystal, the mol-ecules are linked by pairs of N-H⋯N inter-actions, forming centrosymmetric dimers with an R(2) (2)(14) motif.

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Crystal structure of (E)-2-(furan-2-yl-methyl-idene)-2,3,4,9-tetra-hydro-1H-carbazol-1-one.

Project description:The title compound, C17H13NO2, crystallizes with two conformationally very similar independent mol-ecules (A and B) in the asymmetric unit. In the crystal, the individual mol-ecules are linked by pairs of N-H⋯O hydrogen bonds forming A-A and B-B inversion dimers, with R22(10) rings. They stack alternately up the a-axis direction and are linked by C-H⋯π inter-actions, forming sheets parallel to the ab plane.

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6-Bromo-2-[(E)-thio-phen-2-yl-methyl-idene]-2,3,4,9-tetra-hydro-1H-carbazol-1-one.

Project description:In the title compound, C(17)H(12)BrNOS, the cyclo-hexene ring deviates only slightly from planarity (r.m.s. deviation for non-H atoms = 0.047 Å). In the crystal, the mol-ecules are linked into centro-symmetric R(2) (2)(10) dimers via pairs of N-H⋯O hydrogen bonds. The thio-phene ring is disordered over two positions rotated by 180° and with a site-occupation factor of 0.843 (4) for the major occupied site.

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6-Bromo-2-(3-phenyl-allyl-idene)-2,3,4,9-tetra-hydro-1H-carbazol-1-one.

Project description:Mol-ecules of the title compound, C(21)H(16)BrNO, are linked through pairs of N-H⋯O inter-molecular hydrogen bonds into centrosymmetric R(2) (2)(10) dimers. One of the C atoms of the cyclohex-2-enone ring is disordered with refined occupancies of 0.61 (2) and 0.39 (2).

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2-(2,3,4,9-Tetra-hydro-1H-carbazol-1-ylidene)propane-dinitrile.

Project description:In the title mol-ecule, C(15)H(11)N(3), the dihedral angle between the benzene ring and the fused pyrrole ring is 1.07?(5)°. The cyclo-hexene ring adopts an envelope conformation: the dicyano-methyl-ene group at position 1 has a coplanar orientation. An intra-molecular N-H?N hydrogen bond generates an S(7) ring motif. Inter-molecular N-H?N hydrogen bonds form an R(2) (2)(14) ring in the crystal. A C-H?? inter-action involving the benzene ring is also found in the structure.

| S-EPMC3006716 | biostudies-literature

2-{N-[(2,3,4,9-Tetra-hydro-1H-carbazol-3-yl)meth-yl]methyl-sulfonamido}-ethyl methane-sulfonate.

Project description:In the title compound, C17H24N2O5S2, the indole ring system is nearly planar [maximum deviation = 0.032?(1)?Å] and the cyclo-hexene ring has a half-chair conformation. In the crystal, N-H?O hydrogen bonds link the mol-ecules into a chain running along the b-axis direction. Weak C-H?O hydrogen bonds and weak C-H?? inter-actions are observed between the chains.

| S-EPMC3914105 | biostudies-literature

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