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Robust acid–base Ln-MOFs: searching for efficient catalysts in cycloaddition of CO(2) with epoxides and cascade deacetalization–Knoevenagel reactions
A family of microporous and robust Ln(iii)-based metal–organic frameworks (1-Ln, Ln = Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb) have been obtained using 4,4′,4′′-nitrilotribenzoic acid (H(3)NTB) in NMP–HCl solvent. Both single-crystal and powder X-ray diffraction analyses demonstrate that 1-Ln are isostructur...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9682443/ https://www.ncbi.nlm.nih.gov/pubmed/36505724 http://dx.doi.org/10.1039/d2ra06545b |
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author | Si, Xuezhen Pan, Xuze Xue, Jintang Yao, Qingxia Huang, Xianqiang Duan, Wenzeng Qiu, Yi Su, Jie Cao, Minglei Li, Jun |
author_facet | Si, Xuezhen Pan, Xuze Xue, Jintang Yao, Qingxia Huang, Xianqiang Duan, Wenzeng Qiu, Yi Su, Jie Cao, Minglei Li, Jun |
author_sort | Si, Xuezhen |
collection | PubMed |
description | A family of microporous and robust Ln(iii)-based metal–organic frameworks (1-Ln, Ln = Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb) have been obtained using 4,4′,4′′-nitrilotribenzoic acid (H(3)NTB) in NMP–HCl solvent. Both single-crystal and powder X-ray diffraction analyses demonstrate that 1-Ln are isostructural and possess 3D frameworks with permanent porosity for Ar and CO(2) adsorption. Strikingly, the incorporation of both Lewis acidic lanthanide ions and the basic triphenylamine group into 1-Ln makes them efficient acid–base catalysts for both cycloaddition of epoxides with CO(2) and one-pot cascade deacetalization–Knoevenagel reactions. The systematic catalytic studies show that 1-Tb and 1-Yb possess the best catalytic activities for both reactions, indicating the catalytic activities of these Ln-MOFs are strongly dependent on metal Lewis acid sites embedded in the frameworks. |
format | Online Article Text |
id | pubmed-9682443 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-96824432022-12-08 Robust acid–base Ln-MOFs: searching for efficient catalysts in cycloaddition of CO(2) with epoxides and cascade deacetalization–Knoevenagel reactions Si, Xuezhen Pan, Xuze Xue, Jintang Yao, Qingxia Huang, Xianqiang Duan, Wenzeng Qiu, Yi Su, Jie Cao, Minglei Li, Jun RSC Adv Chemistry A family of microporous and robust Ln(iii)-based metal–organic frameworks (1-Ln, Ln = Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb) have been obtained using 4,4′,4′′-nitrilotribenzoic acid (H(3)NTB) in NMP–HCl solvent. Both single-crystal and powder X-ray diffraction analyses demonstrate that 1-Ln are isostructural and possess 3D frameworks with permanent porosity for Ar and CO(2) adsorption. Strikingly, the incorporation of both Lewis acidic lanthanide ions and the basic triphenylamine group into 1-Ln makes them efficient acid–base catalysts for both cycloaddition of epoxides with CO(2) and one-pot cascade deacetalization–Knoevenagel reactions. The systematic catalytic studies show that 1-Tb and 1-Yb possess the best catalytic activities for both reactions, indicating the catalytic activities of these Ln-MOFs are strongly dependent on metal Lewis acid sites embedded in the frameworks. The Royal Society of Chemistry 2022-11-23 /pmc/articles/PMC9682443/ /pubmed/36505724 http://dx.doi.org/10.1039/d2ra06545b Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Si, Xuezhen Pan, Xuze Xue, Jintang Yao, Qingxia Huang, Xianqiang Duan, Wenzeng Qiu, Yi Su, Jie Cao, Minglei Li, Jun Robust acid–base Ln-MOFs: searching for efficient catalysts in cycloaddition of CO(2) with epoxides and cascade deacetalization–Knoevenagel reactions |
title | Robust acid–base Ln-MOFs: searching for efficient catalysts in cycloaddition of CO(2) with epoxides and cascade deacetalization–Knoevenagel reactions |
title_full | Robust acid–base Ln-MOFs: searching for efficient catalysts in cycloaddition of CO(2) with epoxides and cascade deacetalization–Knoevenagel reactions |
title_fullStr | Robust acid–base Ln-MOFs: searching for efficient catalysts in cycloaddition of CO(2) with epoxides and cascade deacetalization–Knoevenagel reactions |
title_full_unstemmed | Robust acid–base Ln-MOFs: searching for efficient catalysts in cycloaddition of CO(2) with epoxides and cascade deacetalization–Knoevenagel reactions |
title_short | Robust acid–base Ln-MOFs: searching for efficient catalysts in cycloaddition of CO(2) with epoxides and cascade deacetalization–Knoevenagel reactions |
title_sort | robust acid–base ln-mofs: searching for efficient catalysts in cycloaddition of co(2) with epoxides and cascade deacetalization–knoevenagel reactions |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9682443/ https://www.ncbi.nlm.nih.gov/pubmed/36505724 http://dx.doi.org/10.1039/d2ra06545b |
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