Iodine and Organoiodide Templates in Supramolecular Synthesis
Hanks, T. W.; Pennington, W. T.; Bailey, R. D. Iodine and Organoiodide Templates in Supramolecular Synthesis. In Anisotropic Organic Materials; American Chemical Society, 2001; Vol. 798, pp 83-96.
The halogen bond between I2 or an organoiodide and a nitrogen heterocycle can be used to control crystal packing. The interaction is relatively strong, highly directional and well-described by quantum mechanical calculations. This allows it to be reliably used for crystal engineering projects. Examples include the resolution of chiral perfluorohaloalkanes, the control o f polymorph formation and the control of diacetylene solid state polymerization. An unique feature in these applications is the ability to remove one component of the co-crystal by thermolysis or solvolysis.
Anisotropic Organic Materials