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Solid-State (77)Se NMR of Organoselenium Compounds through Cross Polarization Magic Angle Spinning (CPMAS) Method
Characterization of selenium states by (77)Se NMR is quite important to provide vital information for mechanism studies in organoselenium-catalyzed reactions. With the development of heterogeneous polymer-supported organoselenium catalysts, the solid state (77)Se NMR comes to the spotlight. It is ne...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5527004/ https://www.ncbi.nlm.nih.gov/pubmed/28743927 http://dx.doi.org/10.1038/s41598-017-06892-8 |
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author | Wei, Duo Han, Mengting Yu, Lei |
author_facet | Wei, Duo Han, Mengting Yu, Lei |
author_sort | Wei, Duo |
collection | PubMed |
description | Characterization of selenium states by (77)Se NMR is quite important to provide vital information for mechanism studies in organoselenium-catalyzed reactions. With the development of heterogeneous polymer-supported organoselenium catalysts, the solid state (77)Se NMR comes to the spotlight. It is necessary to figure out an advanced protocol that provides good quality spectra within limited time because solid state (77)Se NMR measurements are always time consuming due to the long relaxation time and the relatively low sensitivity. Studies on small molecules and several novel polymer-supported organoselenium materials in this article showed that cross polarization (CP) method with the assistance of magic angle spinning (MAS) was more efficient to get high quality spectra than the methods by using single pulse (SP) or high power (1)H decoupling (HPHD) combined with MAS. These results lead to a good understanding of the effect of the molecular structure, the heteronuclear coupling, the long-range ordering of the solid (crystal or amorphous), and the symmetry of (77)Se on quality of their spectra. |
format | Online Article Text |
id | pubmed-5527004 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-55270042017-08-02 Solid-State (77)Se NMR of Organoselenium Compounds through Cross Polarization Magic Angle Spinning (CPMAS) Method Wei, Duo Han, Mengting Yu, Lei Sci Rep Article Characterization of selenium states by (77)Se NMR is quite important to provide vital information for mechanism studies in organoselenium-catalyzed reactions. With the development of heterogeneous polymer-supported organoselenium catalysts, the solid state (77)Se NMR comes to the spotlight. It is necessary to figure out an advanced protocol that provides good quality spectra within limited time because solid state (77)Se NMR measurements are always time consuming due to the long relaxation time and the relatively low sensitivity. Studies on small molecules and several novel polymer-supported organoselenium materials in this article showed that cross polarization (CP) method with the assistance of magic angle spinning (MAS) was more efficient to get high quality spectra than the methods by using single pulse (SP) or high power (1)H decoupling (HPHD) combined with MAS. These results lead to a good understanding of the effect of the molecular structure, the heteronuclear coupling, the long-range ordering of the solid (crystal or amorphous), and the symmetry of (77)Se on quality of their spectra. Nature Publishing Group UK 2017-07-25 /pmc/articles/PMC5527004/ /pubmed/28743927 http://dx.doi.org/10.1038/s41598-017-06892-8 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Wei, Duo Han, Mengting Yu, Lei Solid-State (77)Se NMR of Organoselenium Compounds through Cross Polarization Magic Angle Spinning (CPMAS) Method |
title | Solid-State (77)Se NMR of Organoselenium Compounds through Cross Polarization Magic Angle Spinning (CPMAS) Method |
title_full | Solid-State (77)Se NMR of Organoselenium Compounds through Cross Polarization Magic Angle Spinning (CPMAS) Method |
title_fullStr | Solid-State (77)Se NMR of Organoselenium Compounds through Cross Polarization Magic Angle Spinning (CPMAS) Method |
title_full_unstemmed | Solid-State (77)Se NMR of Organoselenium Compounds through Cross Polarization Magic Angle Spinning (CPMAS) Method |
title_short | Solid-State (77)Se NMR of Organoselenium Compounds through Cross Polarization Magic Angle Spinning (CPMAS) Method |
title_sort | solid-state (77)se nmr of organoselenium compounds through cross polarization magic angle spinning (cpmas) method |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5527004/ https://www.ncbi.nlm.nih.gov/pubmed/28743927 http://dx.doi.org/10.1038/s41598-017-06892-8 |
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