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The role of the capping bond effect on pyclen Y-nat(3+)/Y-90(3+) chelates: full control of the regiospecific N-functionalization makes the difference

Mariane Le Fur 1 Maryline Beyler 1 Eniko Molnar 2 Olivier Fougere 3 David Esteban-Gomez 4 Gyula Tircso 2 Carlos Platas-Iglesias 4 Nicolas Lepareur 5 Olivier Rousseaux 2 Raphaël Tripier 1
1 CEMCA - Chimie, Electrochimie Moléculaires et Chimie Analytique
2 University of Debrecen
3 Guerbet Group
4 Universidad de A Coruña
5 NuMeCan - Nutrition, Métabolismes et Cancer
Abstract : Thanks to a smart regiospecific N-functionalization, a pyclen based ligand bearing one picolinate and two acetate arms organized in a dissymmetric manner was synthesized for Y3+ complexation, and compared to its symmetric analogue. The nature of the capping bonds around the metal coordination environment has a dramatic effect on the properties of the chelate, the Y-nat(3+) and Y-90(3+) dissymmetric derivatives presenting enhanced thermodynamic stability and kinetic inertness.
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Journal articles
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01616222
Contributor : Laurent Jonchère <>
Submitted on : Friday, October 13, 2017 - 1:11:51 PM
Last modification on : Friday, October 16, 2020 - 3:33:09 AM

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UNIV-RENNES1 | NUMECAN | CNRS | NUMECAN-TGTC | UNIV-BREST | CEMCA-BREST | INC-CNRS | UR1-UFR-SVE | UNIV-RENNES | IBSAM | INRAE

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Mariane Le Fur, Maryline Beyler, Eniko Molnar, Olivier Fougere, David Esteban-Gomez, et al.. The role of the capping bond effect on pyclen Y-nat(3+)/Y-90(3+) chelates: full control of the regiospecific N-functionalization makes the difference. Chemical Communications, Royal Society of Chemistry, 2017, 53 (69), pp.9534-9537. ⟨10.1039/c7cc05088g⟩. ⟨hal-01616222⟩

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