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2-(4,5-Dimeth-oxy-2-nitro-phen-yl)-4-meth-oxy-9-phenyl-sulfonyl-9H-carbazole-3-carbaldehyde.

ABSTRACT: In the title compound, C28H22N2O8S, the carbazole ring system is roughly planar, with a maximum deviation of 0.084?(3)?Å for the C atom connected to the 4,5-dimeth-oxy-2-nitro-phenyl ring. The dihedral angle between the carbazole system and the dimeth-oxy-substituted nitro-phenyl ring is 57.05?(10)°. The aldehyde C atom deviates by 0.164?(5)?Å from its attached carbazole ring system. The mol-ecular structure is stabilized by C-H?O inter-actions which generate two S(6) and one S(7) ring motif. In the crystal, mol-ecules are linked by C-H?O hydrogen bonds, forming R 3 (3)(15) ring motifs, which are further crosslinked by R 3 (2)(19) ring motifs, resulting in (002) layers. The crystal packing also features C-H?? inter-actions.

SUBMITTER: Narayanan P

PROVIDER: S-EPMC3998565 | biostudies-literature | 2014 Apr

REPOSITORIES: biostudies-literature

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2-(4,5-Dimeth-oxy-2-nitro-phen-yl)-4-meth-oxy-9-phenyl-sulfonyl-9H-carbazole-3-carbaldehyde.

Narayanan P P Sethusankar K K Saravanan Velu V Mohanakrishnan Arasambattu K AK

Acta crystallographica. Section E, Structure reports online 20140312 Pt 4

In the title compound, C28H22N2O8S, the carbazole ring system is roughly planar, with a maximum deviation of 0.084 (3) Å for the C atom connected to the 4,5-dimeth-oxy-2-nitro-phenyl ring. The dihedral angle between the carbazole system and the dimeth-oxy-substituted nitro-phenyl ring is 57.05 (10)°. The aldehyde C atom deviates by 0.164 (5) Å from its attached carbazole ring system. The mol-ecular structure is stabilized by C-H⋯O inter-actions which generate two S(6) and one S(7) ring motif. In ...[more]

PMID: 24826135

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2-(4,5-Dimeth-oxy-2-nitro-phen-yl)-4-meth-oxy-3-methyl-9-phenyl-sulfonyl-9H-carbazole.

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Crystal structures of three carbazole derivatives: 12-ethyl-7-phenyl-sulfonyl-7H-benzofuro[2,3-b]carbazole, (1), 2-(4,5-dimeth-oxy-2-nitro-phen-yl)-4-hy-droxy-9-phenyl-sulfonyl-9H-carbazole-3-carbaldehyde, (2), and 12-phenyl-7-phenyl-sulfonyl-7H-benzofuro[2,3-b]carbazole, (3).

Project description:The three title compounds, C26H19NO3S, (1), C27H20N2O8S, (2), and C30H19NO3S, (3), are carbazole derivatives, where (1) and (3) are heterocycle-containing carbazoles with a benzo-furan moiety fused to a carbazole unit. In (2), a di-meth-oxy-nitro-phenyl ring is attached to the carbazole moiety. In the three derivatives, a phenyl-sulfonyl group is attached to the N atom of the carbazole unit. Compound (1) crystallizes with two independent mol-ecules in the asymmetric unit (A and B). The carbazole skeleton in the three compounds is essentially planar. In compound (1), the benzene ring of the phenyl-sulfonyl moiety is almost orthogonal to the carbazole moiety, with dihedral angles of 85.42?(9) and 84.52?(9)° in mol-ecules A and B, respectively. The benzene ring of the phenyl-sulfonyl group in compounds (2) and (3) are inclined to the carbazole moiety, making dihedral angles of 70.73?(13) and 81.73?(12)°, respectively. The S atom has a distorted tetra-hedral configuration in all three compounds. In the crystals, C-H?O hydrogen bonds give rise to R22(12) inversion dimers for compound (1), and to R22(24) inversion dimers and R44(40) ring motifs for compound (2). The crystal packing in (1) also features C-H?? and ?-? inter-actions [shortest inter-centroid distance = 3.684?(1)?Å], leading to supra-molecular three-dimensional aggregation. In the crystal of compound (2), the combination of the various C-H?O hydrogen bonds leads to the formation of a three-dimensional network. In the crystal of compound (3), mol-ecules are linked by C-H?O hydrogen bonds, forming chains running parallel to the a axis, and the chains are linked by C-H?? inter-actions, forming corrugated sheets parallel to the ab plane.

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