In the crystal structure of the title compound, C8F16I2·C14H8N2, the molecules form infinite chains parallel to [2-11] through two symmetry-independent C - I⋯N halogen bonds (XBs). As commonly found, the perfluoroalkyl molecules segregate from the hydrocarbon ones, forming a layered structure. Apart from the XBs, the only contact below the sum of van der Waals radii is a weak H⋯F contact. The topology of the network is a nice example of the paradigm of the expansion of ditopic starting modules; the XB leads to the construction of infinite supramolecular chains along [2-11] formed by alternating XB donors and acceptors. © 2013 Cavallo et al
The halogen-bonded adduct 1,4-bis(pyridin-4-yl)buta-1,3-diyne–1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-hexadecafluoro-1,8-diiodooctane (1/1)
CAVALLO, GABRIELLA;METRANGOLO, PIERANGELO;TERRANEO, GIANCARLO
2013-01-01
Abstract
In the crystal structure of the title compound, C8F16I2·C14H8N2, the molecules form infinite chains parallel to [2-11] through two symmetry-independent C - I⋯N halogen bonds (XBs). As commonly found, the perfluoroalkyl molecules segregate from the hydrocarbon ones, forming a layered structure. Apart from the XBs, the only contact below the sum of van der Waals radii is a weak H⋯F contact. The topology of the network is a nice example of the paradigm of the expansion of ditopic starting modules; the XB leads to the construction of infinite supramolecular chains along [2-11] formed by alternating XB donors and acceptors. © 2013 Cavallo et alFile | Dimensione | Formato | |
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2013_ActaE_The halogen bonded adduct.pdf
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