Anion influences on reactivity and NMR spectroscopic features of NHC precursors

A series of 16 benzimidazolium salts of the type (i)Pr(2)-bimyH(+)X(−) with various anions X were synthesized and characterized by various spectroscopic and spectrometric methods. Significant anion and solvent effects on the chemical shifts of the C2–H protons were found, which allows for a ranking...

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Autores principales: Huynh, Han Vinh, Lam, Truc Tien, Luong, Huyen T. T.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9087444/
https://www.ncbi.nlm.nih.gov/pubmed/35547036
http://dx.doi.org/10.1039/c8ra05839c
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author Huynh, Han Vinh
Lam, Truc Tien
Luong, Huyen T. T.
author_facet Huynh, Han Vinh
Lam, Truc Tien
Luong, Huyen T. T.
author_sort Huynh, Han Vinh
collection PubMed
description A series of 16 benzimidazolium salts of the type (i)Pr(2)-bimyH(+)X(−) with various anions X were synthesized and characterized by various spectroscopic and spectrometric methods. Significant anion and solvent effects on the chemical shifts of the C2–H protons were found, which allows for a ranking of the anions in terms of their hydrogen-bond acceptor properties. Stronger acceptors could increase the acidity of their respective salts leading to a faster H/D exchange. Similar but less pronounced anion influences were detected for the (13)C(C2) NMR resonances, while (1)J(C2–H) coupling constants appear to be anion and solvent independent.
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spelling pubmed-90874442022-05-10 Anion influences on reactivity and NMR spectroscopic features of NHC precursors Huynh, Han Vinh Lam, Truc Tien Luong, Huyen T. T. RSC Adv Chemistry A series of 16 benzimidazolium salts of the type (i)Pr(2)-bimyH(+)X(−) with various anions X were synthesized and characterized by various spectroscopic and spectrometric methods. Significant anion and solvent effects on the chemical shifts of the C2–H protons were found, which allows for a ranking of the anions in terms of their hydrogen-bond acceptor properties. Stronger acceptors could increase the acidity of their respective salts leading to a faster H/D exchange. Similar but less pronounced anion influences were detected for the (13)C(C2) NMR resonances, while (1)J(C2–H) coupling constants appear to be anion and solvent independent. The Royal Society of Chemistry 2018-10-12 /pmc/articles/PMC9087444/ /pubmed/35547036 http://dx.doi.org/10.1039/c8ra05839c Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Huynh, Han Vinh
Lam, Truc Tien
Luong, Huyen T. T.
Anion influences on reactivity and NMR spectroscopic features of NHC precursors
title Anion influences on reactivity and NMR spectroscopic features of NHC precursors
title_full Anion influences on reactivity and NMR spectroscopic features of NHC precursors
title_fullStr Anion influences on reactivity and NMR spectroscopic features of NHC precursors
title_full_unstemmed Anion influences on reactivity and NMR spectroscopic features of NHC precursors
title_short Anion influences on reactivity and NMR spectroscopic features of NHC precursors
title_sort anion influences on reactivity and nmr spectroscopic features of nhc precursors
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9087444/
https://www.ncbi.nlm.nih.gov/pubmed/35547036
http://dx.doi.org/10.1039/c8ra05839c
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AT lamtructien anioninfluencesonreactivityandnmrspectroscopicfeaturesofnhcprecursors
AT luonghuyentt anioninfluencesonreactivityandnmrspectroscopicfeaturesofnhcprecursors

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