Singh N, Noh GH, Park HR, Lee J. Crystal structure, Hirshfeld surface and photo-physical analysis of 2-nitro-3-phenyl-9
H-carbazole.
Acta Crystallogr E Crystallogr Commun 2021;
77:887-890. [PMID:
34584755 PMCID:
PMC8423020 DOI:
10.1107/s2056989021007726]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 07/28/2021] [Indexed: 11/10/2022]
Abstract
The title compound, C18H12N2O2, was synthesized from a di-nitro-biphenyl-benzene derivative using a novel modification of the Cadogan reaction. The reaction has several possible ring-closed products and the title compound was separated as the major product. The X-ray crystallographic study revealed that the carbazole compound crystallizes in the monoclinic P space group and possesses a single closed Cadogan ring. There are two independent mol-ecules in the asymmetric unit. In the crystal, the mol-ecules are linked by N-H⋯O hydrogen bonding.
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