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Isosurface representations of the Laplacian of (a)–(c) the ED and (d)–(f) the ELI for three model compounds studied by Grabowsky et al. (2011 ▶). Compound 1: propenal, 2: (E)-allylidenehydrazine and 3: acrylamide. The ELI conveys more immediate information about reactivity than the Laplacian of the ED. Reprinted with permission from Grabowsky et al. (2011 ▶). Copyright (2011) American Chemical Society.
