A statistical survey of the Cambridge Structural Database reveals that the interaction between the π-holes of nitro groups and electron-rich atoms is somewhat directional. High-level ab initio computations indicate energies up to −6.6 kcal mol−1.
A. Bauzá, T. J. Mooibroek and A. Frontera, Chem. Commun., 2015, 51, 1491 DOI: 10.1039/C4CC09132A
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