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Showing 1 to 3 of 3 for “"van der Waals radii"”.
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Halogen···Halogen interactions in host - guest systems
… on their geometry. Type I, which are of van der Waals in nature usually have X···X distances greater than the sum of their van der Waals radii. Type IIa and IIb are interactions which are considered to be attractive and their X···X distances are usually shorter than those of type I. The …
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The synthesis and characterisation of halogen and nitro phenyl azide derivatives as highly energetic materials
… Å. These distances are both below the sum of the van der Waals radii of both atoms. The crystal packing diagram of 2,4,6-tribromophenyl azide is shown in the figure below. 2,6-diiodo-4-nitrophenyl azide was synthesised as previously described and fully characterised using Infrared and Raman …