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Relativistic Heavy-Neighbor-Atom Effects on NMR Shifts: Concepts and Trends Across the Periodic Table
- 1.0531439 - ÚOCHB 2021 RIV US eng J - Journal Article
Vícha, J. - Novotný, J. - Komorovsky, S. - Straka, Michal - Kaupp, M. - Marek, R.
Relativistic Heavy-Neighbor-Atom Effects on NMR Shifts: Concepts and Trends Across the Periodic Table.
Chemical Reviews. Roč. 120, č. 15 (2020), s. 7065-7103. ISSN 0009-2665. E-ISSN 1520-6890
R&D Projects: GA MŠMT(CZ) LTAUSA19148
Institutional support: RVO:61388963
Keywords : density-functional theory * transition metal complexes * nuclear magnetic shieldings
OECD category: Physical chemistry
Impact factor: 60.622, year: 2020
Method of publishing: Open access
https://doi.org/10.1021/acs.chemrev.9b00785
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.
Permanent Link: http://hdl.handle.net/11104/0310104
Number of the records: 1