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Hydride ions in oxide hosts hidden by hydroxide ions

The true oxidation state of formally ‘H(−)’ ions incorporated in an oxide host is frequently discussed in connection with chemical shifts of (1)H nuclear magnetic resonance spectroscopy, as they can exhibit values typically attributed to H(+). Here we systematically investigate the link between geom...

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Autores principales: Hayashi, Katsuro, Sushko, Peter V., Hashimoto, Yasuhiro, Shluger, Alexander L., Hosono, Hideo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Pub. Group 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3973043/
https://www.ncbi.nlm.nih.gov/pubmed/24662678
http://dx.doi.org/10.1038/ncomms4515
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author Hayashi, Katsuro
Sushko, Peter V.
Hashimoto, Yasuhiro
Shluger, Alexander L.
Hosono, Hideo
author_facet Hayashi, Katsuro
Sushko, Peter V.
Hashimoto, Yasuhiro
Shluger, Alexander L.
Hosono, Hideo
author_sort Hayashi, Katsuro
collection PubMed
description The true oxidation state of formally ‘H(−)’ ions incorporated in an oxide host is frequently discussed in connection with chemical shifts of (1)H nuclear magnetic resonance spectroscopy, as they can exhibit values typically attributed to H(+). Here we systematically investigate the link between geometrical structure and chemical shift of H(−) ions in an oxide host, mayenite, with a combination of experimental and ab initio approaches, in an attempt to resolve this issue. We demonstrate that the electron density near the hydrogen nucleus in an OH(−) ion (formally H(+) state) exceeds that in an H(−) ion. This behaviour is the opposite to that expected from formal valences. We deduce a relationship between the chemical shift of H(−) and the distance from the H(−) ion to the coordinating electropositive cation. This relationship is pivotal for resolving H(−) species that are masked by various states of H(+) ions.
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spelling pubmed-39730432014-04-03 Hydride ions in oxide hosts hidden by hydroxide ions Hayashi, Katsuro Sushko, Peter V. Hashimoto, Yasuhiro Shluger, Alexander L. Hosono, Hideo Nat Commun Article The true oxidation state of formally ‘H(−)’ ions incorporated in an oxide host is frequently discussed in connection with chemical shifts of (1)H nuclear magnetic resonance spectroscopy, as they can exhibit values typically attributed to H(+). Here we systematically investigate the link between geometrical structure and chemical shift of H(−) ions in an oxide host, mayenite, with a combination of experimental and ab initio approaches, in an attempt to resolve this issue. We demonstrate that the electron density near the hydrogen nucleus in an OH(−) ion (formally H(+) state) exceeds that in an H(−) ion. This behaviour is the opposite to that expected from formal valences. We deduce a relationship between the chemical shift of H(−) and the distance from the H(−) ion to the coordinating electropositive cation. This relationship is pivotal for resolving H(−) species that are masked by various states of H(+) ions. Nature Pub. Group 2014-03-24 /pmc/articles/PMC3973043/ /pubmed/24662678 http://dx.doi.org/10.1038/ncomms4515 Text en Copyright © 2014, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/
spellingShingle Article
Hayashi, Katsuro
Sushko, Peter V.
Hashimoto, Yasuhiro
Shluger, Alexander L.
Hosono, Hideo
Hydride ions in oxide hosts hidden by hydroxide ions
title Hydride ions in oxide hosts hidden by hydroxide ions
title_full Hydride ions in oxide hosts hidden by hydroxide ions
title_fullStr Hydride ions in oxide hosts hidden by hydroxide ions
title_full_unstemmed Hydride ions in oxide hosts hidden by hydroxide ions
title_short Hydride ions in oxide hosts hidden by hydroxide ions
title_sort hydride ions in oxide hosts hidden by hydroxide ions
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3973043/
https://www.ncbi.nlm.nih.gov/pubmed/24662678
http://dx.doi.org/10.1038/ncomms4515
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