Crystal structures of three carbazole derivatives: 12-ethyl-7-phenyl­sulfonyl-7H-benzofuro[2,3-b]carbazole, (1), 2-(4,5-dimeth­oxy-2-nitro­phen­yl)-4-hy­droxy-9-phenyl­sulfonyl-9H-carbazole-3-carbaldehyde, (2), and 12-phenyl-7-phenyl­sulfonyl-7H-benzofuro[2,3-b]carbazole, (3)

Gangadharan, R.; Narayanan, P.; Sethusankar, K.; Saravanan, V.; Mohanakrishnan, A.K.

doi:10.1107/S2056989016016819

Acta Crystallographica Section E
Acta Crystallographica
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Figure 2
The molecular structure of compound (2), showing the atom-numbering scheme and displacement ellipsoids are drawn at the 30% probability level. The intramolecular O—H⋯O and C—H⋯O hydrogen bonds, which generate three S(6) ring motifs, are shown as dashed lines (see Table 2

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 72| Part 12| December 2016| Pages 1744-1750

https://doi.org/10.1107/S2056989016016819

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