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  • H-Bonded anion–anion comple...
    Prohens, Rafel; Portell, Anna; Font-Bardia, Mercè; Bauzá, Antonio; Frontera, Antonio

    Chemical communications (Cambridge, England), 2018, Volume: 54, Issue: 15
    Journal Article

    Herein we report the experimental observation (X-ray characterization) of an anion–anion complex (anion = hydrogen fumarate) stabilized by H-bonds that is trapped in a secondary squaramide receptor. High level ab initio calculations indicate that the anion–anion complex is thermodynamically unstable but kinetically stable with respect to the isolated anions.