Acta Crystallographica Section C

Crystal Structure Communications

Volume 61, Part 10 (October 2005)

organic compounds

sk1868 scheme

Acta Cryst. (2005). C61, o617-o620 [ doi:10.1107/S0108270105029136 ]

-Stacked hydrogen-bonded chains of rings in 2,4-difluorobenzaldehyde isonicotinoylhydrazone and hydrogen-bonded sheets in 2,3-dichlorobenzaldehyde isonicotinoylhydrazone

S. M. S. V. Wardell, M. V. N. de Souza, M. de L. Ferreira, T. R. A. Vasconcelos, J. N. Low and C. Glidewell

Abstract: The difluorinated ring in 2,4-difluorobenzaldehyde isonicotinoylhydrazone, C₁₃H₉F₂N₃O, (I), is disordered over two sets of sites with unequal occupancy. The molecules of (I) are linked by a combination of N-HO and C-HO hydrogen bonds into chains of rings, which are linked into sheets by a single [pi] - [pi] stacking interaction. In 2,3-dichlorobenzaldehyde isonicotinoylhydrazone, C₁₃H₉Cl₂N₃O, (II), the molecules are linked by a combination of N-HN, C-HN and C-HO hydrogen bonds into sheets of R₄⁴(14) and R₄⁴(26) rings.

Formula: C₁₃H₉F₂N₃O and C₁₃H₉Cl₂N₃O


	Structure factor file (CIF format) (130.6 kbytes) Contains datablock I

	Structure factor file (CIF format) (139.1 kbytes) Contains datablock II

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