Publication details

Relativistic Heavy-Neighbor-Atom Effects on NMR Shifts: Concepts and Trends Across the Periodic Table

Authors

VÍCHA Jan NOVOTNÝ Jan KOMOROVSKY Stanislav STRAKA Michal KAUPP Martin MAREK Radek

Year of publication 2020
Type Article in Periodical
Magazine / Source Chemical Reviews
MU Faculty or unit

Central European Institute of Technology

Citation
Web DOI: 10.1021/acs.chemrev.9b00785
Doi http://dx.doi.org/10.1021/acs.chemrev.9b00785
Keywords NMR;magnetic resonance;spectroscopy;DFT;theoretical calculation;chemical shift;relativistic effects; spin-orbit coupling
Attached files
Description Chemical shifts present crucial information about an NMR spectrum. They show the influence of the chemical environment on the nuclei being probed. Relativistic effects caused by the presence of an atom of a heavy element in a compound can appreciably, even drastically, alter the NMR shifts of the nearby nuclei. A fundamental understanding of such relativistic effects on NMR shifts is important in many branches of chemical and physical science. This review provides a comprehensive overview of the tools, concepts, and periodic trends pertaining to the shielding effects by a neighboring heavy atom in diamagnetic systems, with particular emphasis on the “spin-orbit heavy-atom effect on the light-atom” NMR shift (SO-HALA effect). The analyses and tools described in this review provide guidelines to help NMR spectroscopists and computational chemists estimate the ranges of the NMR shifts for an unknown compound, identify intermediates in catalytic and other processes, analyze conformational aspects and intermolecular interactions, and predict trends in series of compounds throughout the Periodic Table. The present review provides a current snapshot of this important subfield of NMR spectroscopy and a basis and framework for including future findings in the field.
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