Discovery of anion-p interactions in the recognition mechanism of inorganic anions by 1,2,3-triazolium rings.

Chemical communications (Cambridge, England)

PubMedID: 24525718

Caballero A, Zapata F, González L, Molina P, Alkorta I, Elguero J. Discovery of anion-p interactions in the recognition mechanism of inorganic anions by 1,2,3-triazolium rings. Chem Commun (Camb). 2014;.
A bis(triazolium)-based receptor designed for anion recognition is presented. NMR spectroscopic data indicate that one triazolium ring is acting as a hydrogen bond donor, whereas the second triazolium ring behaves as an anion-p receptor. The simultaneous presence of two noncovalent interactions allows us to achieve a highly selective binding of the hydrogenpyrophosphate anion.