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Acta Cryst. (2013). E69, o654-o655
[ doi:10.1107/S1600536813008301 ]

1,3-Diiodoazulene-2-carbonitrile

S. Förster, W. Seichter and E. Weber

Abstract: In the title compound, C11H5I2N, the two iodine-atom substitutents with their large atomic sizes lead to short intramolecular I...H distances (3.01 Å). In the crystal, the trisubstituted azulene system forms [pi]-stacks [centroid-centroid distance = 3.6343 (11) Å] along the a-axis direction, showing the characteristic azulene interaction mode between the electron-rich five-membered ring and the electron-deficient seven-membered ring. I...I [3.9129 (2) Å] non-covalent contacts are observed along with weak C-H...N and C-H...[pi]. bonds.


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