title: Tetrakis(diisopropyl amide) substituted norbornadiene and quadricyclane are highly barium selective ligands.
abstract: Tetrakis(diisopropyl amide) substituted norbornadiene and quadricyclane derivatives were investigated for their extraction and transport capabilities with alkaline earth metal cations. Both amides exhibited a remarkably high preference of Ba(2+) over any other alkali metal or alkaline earth cation. The binding geometries were determined by quantum chemical DFT calculations.
authors.affiliation: Otto Diels-Institute for Organic Chemistry, Otto-Hahn-Platz 3-4, 24098 Kiel, Germany.
authors.forename: Torsten
authors.initials: T
authors.lastname: Winkler
authors.forename: Monika
authors.initials: M
authors.lastname: Bayrhuber
authors.forename: Benjamin
authors.initials: B
authors.lastname: Sahlmann
authors.forename: Rainer
authors.initials: R
authors.lastname: Herges