Journal
COORDINATION CHEMISTRY REVIEWS
Volume 467, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ccr.2022.214606
Keywords
Gadolinium; Lanthanides; Stability; Contrast agents; MRI
Categories
Funding
- Xunta de Galicia [ED431B 2017/59, ED431D 2017/01, ED481A-2018/314]
- National Institute for Diabetes, Digestive, and Kidney Diseases [R01DK121789, R01DK120663]
- National Institute of Health Office of the Director [S10OD010650, S10OD025234]
- National Heart Lung and Blood Institute [K25HL128899]
- Ministerio de Economia y Competitividad [PID2019-108352RJ-I00]
Ask authors/readers for more resources
This research developed a method for predicting Gd(III)-ligand formation constant and pGd at pH 7.4 using known stability constants and structural descriptors, showing strong predictive power and potential for screening potential ligands.
Gadolinium(III) complexes are widely employed as contrast agents in diagnostic magnetic resonance imaging, and the development of new contrast agents remains a highly active field. A key requisite for contrast agents is high thermodynamic stability of the complex to ensure that the Gd(III) ion is not released in the body. Here we utilized published stability constants spanning 20 orders of magnitude to develop empirical expressions based on structural descriptors to predict the Gd(III)-ligand formation constant as well as pGd at pH 7.4. We then tested the predictive power of these expressions and found excellent agreement with a mean deviation of 1.0 log K units. The magnitudes of the structural descriptors are useful for guiding ligand design for Gd(III), and the empirical stability constant expressions can be used to screen potential ligands. This methodology is readily extended to other aqueous metal ion systems.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available