Substituent effects on fluoride binding by lanthanide complexes of DOTA-tetraamides

Dalton Transactions : an International Journal of Inorganic Chemistry
Octavia A BlackburnStephen Faulkner

Abstract

Fluoride binding by a series of europium and ytterbium complexes of DOTA-tetraamide ligands derived from primary, secondary and tertiary amides has been studied by NMR and luminescence spectroscopies. In all the systems studied, fluoride binding results in a change in the nature of the magnetic anisotropy at the metal centre from an easy axis, to an easy plane anisotropy. This results in reversal of the peaks in the NMR spectra, and in changes to the fine structure of the luminescence spectra. Furthermore, changes to the periphery of the binding cavity are implicated in determining the affinity constant for fluoride. There are clear differences in the entropic contribution to the free energy of activation between systems with benzylic amides and those with methylamides.

References

Jul 19, 2002·Chemical Communications : Chem Comm·Silvio AimeHorst Puschmann
Dec 5, 2012·Angewandte Chemie·Marie-Emmanuelle BoulonRoberta Sessoli
Sep 24, 2013·Inorganic Chemistry·Roberto Berardozzi, Lorenzo Di Bari
Oct 8, 2013·Nature Communications·Nicholas F ChiltonAlessandro Soncini
Jul 25, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Octavia A BlackburnStephen Faulkner

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Citations

May 13, 2017·Angewandte Chemie·Jack D RoutledgeStephen Faulkner
May 12, 2016·Chemistry : a European Journal·Octavia A BlackburnStephen Faulkner
Feb 24, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Octavia A BlackburnSergey Shuvaev
Jan 13, 2018·Chemistry : a European Journal·Aline NonatLoïc J Charbonnière
May 26, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Lea Gundorff NielsenThomas Just Sørensen
Jan 17, 2020·Chemistry : a European Journal·Gev DovratIsrael Zilbermann
Nov 18, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Salauat R KiraevK Eszter Borbas
Apr 29, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Loredana LeoneLorenzo Tei
Jun 25, 2021·Chemical Science·Samantha E Bodman, Stephen J Butler
Dec 10, 2016·Inorganic Chemistry·Anne Kathrine R JunkerThomas Just Sørensen
Jan 8, 2019·Journal of the American Chemical Society·Aline NonatLoïc J Charbonnière
Jul 7, 2020·Journal of the American Chemical Society·Daniel KovacsK Eszter Borbas
Jan 25, 2020·The Journal of Physical Chemistry. a·Aurora Rodríguez-RodríguezCarlos Platas-Iglesias
Nov 7, 2019·Inorganic Chemistry·Lea Gundorff Nielsen, Thomas Just Sørensen
Mar 11, 2020·The Journal of Organic Chemistry·Magalie DelecluseAlexandre Martinez

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