Crystal structures of three indole derivatives: 3-ethnyl-2-methyl-1-phenyl­sulfonyl-1H-indole, 4-phenyl­sulfonyl-3H,4H-cyclo­penta­[b]indol-1(2H)-one and 1-{2-[(E)-2-(5-chloro-2-nitro­phen­yl)ethen­yl]-1-phenyl­sulfonyl-1H-indol-3-yl}ethan-1-one chloro­form monosolvate

Acta Crystallographica Section E: Crystallographic Communications

Ramalingam, B.M.¹  Mohanakrishnan, A.K.¹  Gopinath, S.²  Sethusankar, K.² 

[1] Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India;Department of Physics, RKM Vivekananda College (Autonomous), Chennai 600 004, India

关键词: CRYSTAL STRUCTURE;    PHENYLSULFONYL;    INDOLE DERIVATIVES;    HYDROGEN BONDING;   

DOI  :  10.1107/S2056989015014917

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

The title compounds, C17H13NO2S, (I), C17H13NO3S, (II), and C24H17ClN2O5S·CHCl3, (III), are indole derivatives. Compounds (I) and (II) crystalize with two independent mol­ecules in the asymmetric unit. The indole ring systems in all three structures deviate only slightly from planarity, with dihedral angles between the planes of the pyrrole and benzene rings spanning the tight range 0.20 (9)–1.65 (9)°. These indole ring systems, in turn, are almost orthogonal to the phenyl­sulfonyl rings [range of dihedral angles between mean planes = 77.21 (8)–89.26 (8)°]. In the three compounds, the mol­ecular structure is stabilized by intra­molecular C—H⋯O hydrogen bonds, generating S(6) ring motifs with the sulfone O atom. In compounds (I) and (II), the two independent mol­ecules are linked by C—H⋯O hydrogen bonds and C—H⋯π inter­actions, while in compound (III), the mol­ecules are linked by C—H⋯O hydrogen bonds, generating R22(22) inversion dimers.

【 授权许可】

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