Acta Crystallographica Section C

Crystal Structure Communications

Volume 58, Part 8 (August 2002)

Acta Cryst. (2002). C58, o450-o454 [doi:10.1107/S0108270102009587]

Diethyl {3-[-(2,4-dichlorophenyl)vinyl]-N-(phenylsulfonyl)indol-2-ylmethyl}phosphonate and diethyl {3-[-(4-bromophenyl)vinyl]-N-(phenylsulfonyl)indol-2-ylmethyl}phosphonate

K. Sethu Sankar, S. Kannadasan, D. Velmurugan, P. C. Srinivasan and J.-K. Moon

Abstract: The title compounds, C₂₇H₂₆Cl₂NO₅PS, (I), and C₂₇H₂₇BrNO₅PS, (II), respectively, crystallize in the centrosymmetric space group P2₁/n with one molecule in the asymmetric unit in each case. The dihedral angle between the benzene and pyrrole rings is 2.1 (1)° in (I) and 0.9 (2)° in (II). The phenylsulfonyl group is orthogonal to the halophenyl moiety, with a dihedral angle of 82.0 (1)° in (I) and 78.7 (2)° in (II). In both compounds, the molecular structures and packing are stabilized by C-HO and C-Hhalogen interactions. The intermolecular hydrogen bonds in (I) form cyclic dimers with graph-set descriptors R ${_2^1}$ (10) and R ${_2^2}$ (8) about a 2₁ axis, and those in (II) form a C ${_2^2}$ (20) chain.

Formula: C₂₇H₂₆Cl₂NO₅PS and C₂₇H₂₇BrNO₅PS

Online 12 July 2002


	Structure factor file (CIF format) (233.1 kbytes) Contains datablock I

	Structure factor file (CIF format) (229.4 kbytes) Contains datablock II

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