000K utf8 1100 $c2012 1500 eng 2050 urn:nbn:de:gbv:8-publ-244 2051 10.1039/c2dt30242j 3000 Winkler, Torsten 3010 Bayrhuber, Monika 3010 Herges, Rainer 3010 Sahlmann, Benjamin 4000 Tetrakis(diisopropyl amide) substituted norbornadiene and quadricyclane are highly barium selective ligands [Winkler, Torsten] 4209 Tetrakis(diisopropyl amide) substituted norbornadiene and quadricyclane derivatives were investigated for their extraction and transport capabilities with alkaline earth metal cations. Both amides exhibited a remarkably high preference of Ba2+ over any other alkali metal or alkaline earth cation. The binding geometries were determined by quantum chemical DFT calculations. 4950 https://doi.org/10.1039/c2dt30242j$xR$3Volltext$534 4950 https://nbn-resolving.org/urn:nbn:de:gbv:8-publ-244$xR$3Volltext$534 4961 https://macau.uni-kiel.de/receive/publ_mods_00000024 5051 540 5550 quadricyclane derivatives