Towards promising oxoanion extractants: azacages and open-chain counterparts
Towards promising oxoanion extractants: azacages and open-chain counterparts
Farrell, D.; Gloe, K.; Gloe, K.; Goretzki, G.; Mckee, V.; Nelson, J.; Nieuwenhuyzen, M.; Pál, I.; Stephan, H.; Town, R. M.; Wichmann, K.
The efficiency of a series of amino-azacryptands for encapsulation and etraction of the oxoanions pertechnetate and perrhenate from aqueous solution is investigated and compared with that of their open-chain counterparts. The aqueous formation constants for oxoanion association with the cryptands were determined by pH potentiometry and/or NMR, and X-ray analysis of single crystals provides evidence for encapsulation. The extractabilities could not be explained solely on the basis of ligand lipophilicity; the level of protonation also plays an important role.
- J. Chem. Soc., Dalton Trans. (2003) 1961-1968
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Lecture (Conference)
Dalton Discussion 5 "Ligand Design for Functional Complexes", Noordwijkerhout, The Netherlands, 10.-12.04.2003
Permalink: https://www.hzdr.de/publications/Publ-5432