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
Section E CRYSTALLOGRAPHIC COMMUNICATIONS

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Figure 6
The crystal packing of compound (2), viewed normal to plane ( $[\overline{2}]$ 04), showing the formation of $[R_{2}^{2}]$ (24) graph-set ring motifs, resulting in the formation of sheets parallel to plane ( $[\overline{2}]$ 04). The dashed lines indicate the intermolecular C—H⋯O hydrogen bonds (Table 2

), and H atoms not involved in the hydrogen bonding have been excluded for clarity.

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

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

https://doi.org/10.1107/S2056989016016819

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