Referencing of 1H and 13C NMR shielding measurements

[Display omitted] •2H shielding measurements for deuterated solvents were performed relative to 3He.•Investigated solvents are proposed as the secondary reference standards of shielding.•1H and 13C shielding constants were carefully verified exploring the same method. Direct measurements of 1H, 2H a...

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Bibliographic Details
Published in:Chemical physics letters 2019-08, Vol.728, p.148-152
Main Authors: Garbacz, Piotr, Jackowski, Karol
Format: Article
Language:English
Subjects:
Nuclear shielding in TMS
Referencing of NMR spectra
Shielding measurements
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Summary:[Display omitted] •2H shielding measurements for deuterated solvents were performed relative to 3He.•Investigated solvents are proposed as the secondary reference standards of shielding.•1H and 13C shielding constants were carefully verified exploring the same method. Direct measurements of 1H, 2H and 13C NMR shielding are performed for 13 deuterated liquid solvents using an isolated helium-3 atom as the primary reference standard of shielding. It has been possible exploring the absolute resonance frequencies and nuclear magnetic moments of the investigated nuclei. The measured shielding values are verified using appropriate chemical shifts with the accurate values of 1H and 13C shielding in liquid TMS. As shown, all the new 2H shielding parameters of the investigated solvents can be applied as the secondary reference standards of shielding for gases and liquids in usual NMR laboratory practice.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2019.04.089