Work

Selective Nitrate Binding in Competitive Hydrogen Bonding Solvents: Do Anion–π Interactions Facilitate Nitrate Selectivity?

Year: 2013

Type: article

Abstract: New tripodal urea receptors demonstrate preferential binding of anions over competitive hydrogen bonding solvents. 1H NMR titrations in 10 % [D6]DMSO/CDCl3 show a higher affinity for nitrate over the halides for the fluorinated receptor, which is lost when the fluorine atoms are absent. An anion–π interaction between the nitrate and the π-system of the ethynyl-substituted arene is proposed as the source of this selectivity.

Source: Angewandte Chemie International Edition

DOI: 10.1002/anie.201303881

Authors: Michelle M. Watt, Lev N. Zakharov, Michael M. Haley, Darren W. Johnson

Institution: University of Oregon

Language: English

Topic: Supramolecular Chemistry and Complexes

Subfield: Organic Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: green

Funders: National Institute of General Medical Sciences, National Institute of Environmental Health Sciences

Awards: Reducing Susceptibility to Environmental Stress Throughout the Life Span, Design of Modular Receptors for Ion and Molecule Recognition