Accelerating water exchange in GdIII–DO3A-derivatives by favouring the dissociative mechanism through hydrogen bonding
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- Investigación (FCIE) [1228]
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Accelerating water exchange in GdIII–DO3A-derivatives by favouring the dissociative mechanism through hydrogen bondingDate
2018-12-10Citation
L. Leone, D. Esteban-Gómez, C. Platas-Iglesias, M. Milanesio and L. Tei, Accelerating water exchange in Gd III -DO3A-derivatives by favouring the dissociative mechanism through hydrogen bonding, Chem. Commun., 2019, 55, 513–516. DOI: 10.1039/C8CC08556K.
Abstract
[Abstract] The GdIII-complexes of DO3A-acetophenone and ortho- or para- hydroxyacetophenone ligands have been investigated to assess the effect of the presence of a phenol group on the relaxivity and on the water exchange rate of these potential MRI contrast agents. H-Bonding between the ortho-phenol(ate) groups and the water molecules involved in the dissociative exchange mechanism is shown to speed up the water exchange rate by stabilizing the eight-coordinate transition state.
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1364-548X
