Acta Cryst. (2008). E64, o1870-o1871  [ doi:10.1107/S1600536808027608 ]

N,N'-Bis(2-iodobenzylidene)ethane-1,2-diamine

H.-K. Fun and R. Kia

Abstract: The molecule of the title Schiff base compound, C₁₆H₁₄I₂N₂, lies across a crystallographic inversion centre. An intramolecular C-HI hydrogen bond forms a five-membered ring, producing an S(5) ring motif. The C=N bond is coplanar with the benzene ring and adopts a trans configuration. Within the molecule, the planar units are parallel, but extend in opposite directions from the dimethylene bridge. An interesting feature of the crystal structure is the short IN [3.2096 (15) Å] interaction, which is significantly shorter than the sum of the van der Waals radii of these atoms. In the crystal structure, molecules are linked into one-dimensional extended chains along the c axis and also into one-dimensional extended chains along the b axis through short intermolecular IN interactions, forming two-dimensional networks parallel to the bc plane.

Online 6 September 2008

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