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“Anti-electrostatic” halogen bonding in solution
Halogen-bonded (XB) complexes between halide anions and a cyclopropenylium-based anionic XB donor were characterized in solution for the first time. Spontaneous formation of such complexes confirms that halogen bonding is sufficiently strong to overcome electrostatic repulsion between two anions. Th...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8208320/ https://www.ncbi.nlm.nih.gov/pubmed/34194716 http://dx.doi.org/10.1039/d1sc01863a |
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author | Loy, Cody Holthoff, Jana M. Weiss, Robert Huber, Stefan M. Rosokha, Sergiy V. |
author_facet | Loy, Cody Holthoff, Jana M. Weiss, Robert Huber, Stefan M. Rosokha, Sergiy V. |
author_sort | Loy, Cody |
collection | PubMed |
description | Halogen-bonded (XB) complexes between halide anions and a cyclopropenylium-based anionic XB donor were characterized in solution for the first time. Spontaneous formation of such complexes confirms that halogen bonding is sufficiently strong to overcome electrostatic repulsion between two anions. The formation constants of such “anti-electrostatic” associations are comparable to those formed by halides with neutral halogenated electrophiles. However, while the latter usually show charge-transfer absorption bands, the UV-Vis spectra of the anion–anion complexes examined herein are determined by the electronic excitations within the XB donor. The identification of XB anion–anion complexes substantially extends the range of the feasible XB systems, and it provides vital information for the discussion of the nature of this interaction. |
format | Online Article Text |
id | pubmed-8208320 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-82083202021-06-29 “Anti-electrostatic” halogen bonding in solution Loy, Cody Holthoff, Jana M. Weiss, Robert Huber, Stefan M. Rosokha, Sergiy V. Chem Sci Chemistry Halogen-bonded (XB) complexes between halide anions and a cyclopropenylium-based anionic XB donor were characterized in solution for the first time. Spontaneous formation of such complexes confirms that halogen bonding is sufficiently strong to overcome electrostatic repulsion between two anions. The formation constants of such “anti-electrostatic” associations are comparable to those formed by halides with neutral halogenated electrophiles. However, while the latter usually show charge-transfer absorption bands, the UV-Vis spectra of the anion–anion complexes examined herein are determined by the electronic excitations within the XB donor. The identification of XB anion–anion complexes substantially extends the range of the feasible XB systems, and it provides vital information for the discussion of the nature of this interaction. The Royal Society of Chemistry 2021-05-10 /pmc/articles/PMC8208320/ /pubmed/34194716 http://dx.doi.org/10.1039/d1sc01863a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Loy, Cody Holthoff, Jana M. Weiss, Robert Huber, Stefan M. Rosokha, Sergiy V. “Anti-electrostatic” halogen bonding in solution |
title | “Anti-electrostatic” halogen bonding in solution |
title_full | “Anti-electrostatic” halogen bonding in solution |
title_fullStr | “Anti-electrostatic” halogen bonding in solution |
title_full_unstemmed | “Anti-electrostatic” halogen bonding in solution |
title_short | “Anti-electrostatic” halogen bonding in solution |
title_sort | “anti-electrostatic” halogen bonding in solution |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8208320/ https://www.ncbi.nlm.nih.gov/pubmed/34194716 http://dx.doi.org/10.1039/d1sc01863a |
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