Acta Crystallographica Section C

Crystal Structure Communications

Volume 60, Part 1 (January 2004)

Acta Cryst. (2004). C60, o12-o14 [doi:10.1107/S0108270103025654]

Three-dimensional aggregation in 2-hydroxy-3-iodo-5-nitrobenzaldehyde involving C-HO, iodo-nitro and aromatic - stacking interactions, and isolated dimers in disordered 2,4-diiodo-6-nitroanisole

S. J. Garden, F. R. da Cunha, C. Glidewell, J. N. Low, J. M. S. Skakle and J. L. Wardell

Abstract: In 2-hydroxy-3-iodo-5-nitrobenzaldehyde, C₇H₄INO₄, the molecules are linked into sheets by a combination of C-HO hydrogen bonds and two-centre iodo-nitro interactions, and these sheets are linked by aromatic [bold pi] - stacking interactions. Molecules of 2,4-diiodo-6-nitroanisole, C₇H₅I₂NO₃, are disordered, with the nitro group and one of the I substituents each occupying common sets of sites with 0.5 occupancy. The molecules are linked into isolated centrosymmetric dimeric units by a single iodo-nitro interaction.

Formula: C₇H₄INO₄ and C₇H₅I₂NO₃

Online 6 December 2003


	Structure factor file (CIF format) (93.6 kbytes) Contains datablock I

	Structure factor file (CIF format) (182.1 kbytes) Contains datablock II

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