NMR STUDY OF THE TEMPERATURE DEPENDENCE OF PARAMAGNETIC CHEMICAL SHIFTS OF [Dy(DTPA)]2– IN SOLUTIONS AT VARIOUS pH VALUES

The NMR spectra of complex [Dy(DTPA)] 2– are studied at various temperatures and pH values of the aqueous solution. The NMR signals of [Dy(DTPA)] 2– are most sensitive to temperature changes (the maximum temperature sensitivity is 2.2 ppm/K at pH = 7.4) and are almost insensitive to pH changes in th...

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Bibliographic Details
Published in:Journal of structural chemistry 2022, Vol.63 (6), p.983-987
Main Authors: Zapolotsky, E. N., Babailov, S. P.
Format: Article
Language:English
Subjects:
Aqueous solutions
Atomic
Atomic/Molecular Structure and Spectra
Chemistry
Chemistry and Materials Science
In vivo methods and tests
Inorganic Chemistry
Molecular
NMR
Nuclear magnetic resonance
Optical and Plasma Physics
Physical Chemistry
Reagents
Solid State Physics
Temperature dependence
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Summary:The NMR spectra of complex [Dy(DTPA)] 2– are studied at various temperatures and pH values of the aqueous solution. The NMR signals of [Dy(DTPA)] 2– are most sensitive to temperature changes (the maximum temperature sensitivity is 2.2 ppm/K at pH = 7.4) and are almost insensitive to pH changes in the range from 3.3 to 11.0. A significant change of chemical shifts is observed only in the pH region from 3.3 to 1.1 due to the formation of protonated forms of the complexes. [Dy(DTPA)] 2– can be considered as a promising reagent for temperature determination in aqueous media using in vitro and in vivo NMR.
ISSN:0022-4766
1573-8779
DOI:10.1134/S0022476622060166