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Title: Communication: Infrared spectroscopy of salt-water complexes.
Authors: Tandy, Jon
Feng, Cheng
Boatwright, Adrian
Sarma, Gautam
Sadoon, Ahmed M.
Shirley, Andrew
Rodrigues, Natercia Das Neves
Cunningham, Ethan M.
Yang, Shengfu
Ellis, Andrew M.
First Published: 22-Mar-2016
Publisher: AIP Publishing
Citation: Journal of Chemical Physics, 144, 121103 (2016)
Abstract: To explore how the ion-pair in a single salt molecule evolves with the addition of water, infrared (IR) spectra of complexes composed of NaCl and multiple water molecules have been recorded for the first time. The NaCl(H2O)n complexes were formed and probed in liquid helium nanodroplets, and IR spectra were recorded for n = 1 → 4. The spectra for n = 1, 2, and 3 are consistent with formation of the lowest energy contact-ion pair structures in which each water molecule forms a single ionic hydrogen bond to an intact Na(+)Cl(-) ion-pair. Alternative structures with hydrogen bonding between water molecules become energetically competitive for n = 4, and the IR spectrum indicates likely the coexistence of at least two isomers.
DOI Link: 10.1063/1.4945342
ISSN: 0021-9606
eISSN: 1089-7690
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Creative Commons “Attribution Non-Commercial No Derivatives” licence CC BY-NC-ND, further details of which can be found via the following link: Archived with reference to SHERPA/RoMEO and publisher website.
Appears in Collections:Published Articles, Dept. of Chemistry

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