Fluorinated calixpyrroles: anion-binding extractants that reduce the Hofmeister bias
Abstract
β-Octafluoro-meso-octamethylcalix[4]pyrrole (1) and β-decafluoro-meso-decamethylcalix[5]pyrrole (2) were found to extract caesium salts of smaller anions (bromide and chloride for 1 and nitrate for 2) as effectively as that of iodide into