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X-ray imaging of chemically active valence electrons during a pericyclic reaction
Time-resolved imaging of chemically active valence electron densities is a long-sought goal, as these electrons dictate the course of chemical reactions. However, X-ray scattering is always dominated by the core and inert valence electrons, making time-resolved X-ray imaging of chemically active val...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Pub. Group
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4263170/ https://www.ncbi.nlm.nih.gov/pubmed/25424639 http://dx.doi.org/10.1038/ncomms6589 |
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author | Bredtmann, Timm Ivanov, Misha Dixit, Gopal |
author_facet | Bredtmann, Timm Ivanov, Misha Dixit, Gopal |
author_sort | Bredtmann, Timm |
collection | PubMed |
description | Time-resolved imaging of chemically active valence electron densities is a long-sought goal, as these electrons dictate the course of chemical reactions. However, X-ray scattering is always dominated by the core and inert valence electrons, making time-resolved X-ray imaging of chemically active valence electron densities extremely challenging. Here we demonstrate an effective and robust method, which emphasizes the information encoded in weakly scattered photons, to image chemically active valence electron densities. The degenerate Cope rearrangement of semibullvalene, a pericyclic reaction, is used as an example to visually illustrate our approach. Our work also provides experimental access to the long-standing problem of synchronous versus asynchronous bond formation and breaking during pericyclic reactions. |
format | Online Article Text |
id | pubmed-4263170 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Nature Pub. Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-42631702014-12-16 X-ray imaging of chemically active valence electrons during a pericyclic reaction Bredtmann, Timm Ivanov, Misha Dixit, Gopal Nat Commun Article Time-resolved imaging of chemically active valence electron densities is a long-sought goal, as these electrons dictate the course of chemical reactions. However, X-ray scattering is always dominated by the core and inert valence electrons, making time-resolved X-ray imaging of chemically active valence electron densities extremely challenging. Here we demonstrate an effective and robust method, which emphasizes the information encoded in weakly scattered photons, to image chemically active valence electron densities. The degenerate Cope rearrangement of semibullvalene, a pericyclic reaction, is used as an example to visually illustrate our approach. Our work also provides experimental access to the long-standing problem of synchronous versus asynchronous bond formation and breaking during pericyclic reactions. Nature Pub. Group 2014-11-26 /pmc/articles/PMC4263170/ /pubmed/25424639 http://dx.doi.org/10.1038/ncomms6589 Text en Copyright © 2014, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International 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/4.0/ |
spellingShingle | Article Bredtmann, Timm Ivanov, Misha Dixit, Gopal X-ray imaging of chemically active valence electrons during a pericyclic reaction |
title | X-ray imaging of chemically active valence electrons during a pericyclic reaction |
title_full | X-ray imaging of chemically active valence electrons during a pericyclic reaction |
title_fullStr | X-ray imaging of chemically active valence electrons during a pericyclic reaction |
title_full_unstemmed | X-ray imaging of chemically active valence electrons during a pericyclic reaction |
title_short | X-ray imaging of chemically active valence electrons during a pericyclic reaction |
title_sort | x-ray imaging of chemically active valence electrons during a pericyclic reaction |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4263170/ https://www.ncbi.nlm.nih.gov/pubmed/25424639 http://dx.doi.org/10.1038/ncomms6589 |
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