Open AccessHydrogen to Deuterium Exchange Rate Measurement in Ionic Liquid-Water Mixture Using NMR
Author(s) -
Balvinder Singh
Publication year - 2021
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2021.23434
Subject(s) - chemistry , deuterium , ionic liquid , heavy water , analytical chemistry (journal) , hydrogen , aqueous solution , nuclear magnetic resonance spectroscopy , deuterium nmr , hydrogen–deuterium exchange , ionic bonding , inorganic chemistry , nuclear magnetic resonance , ion , chromatography , organic chemistry , catalysis , nuclear physics , physics
The rate of hydrogen (H) to deuterium (D) exchange in an aqueous system or bulk water is faster,making it challenging to estimate the rate of H to D exchange using nuclear magnetic resonancespectroscopy (NMR). Confined water behaves differently than bulk water in high viscous media, suchas some room temperature ionic liquids and the H/D exchange rate becomes slow, which can bemeasured via NMR. Here, we used selective inversion recovery method to confined water in ionicliquid ([BMIM][BF4])-water-deuterium oxide mixture and measured exchange rate. The numericalvalue of exchange rate obtained using non-linear curve fitting of the experimental data is 1.34 s–1.