Communication: Infrared spectroscopy of salt-water complexes

Tandy, Jonathan D. and Feng, Cheng and Boatwright, Adrian and Sarma, Gautam and Sadoon, Ahmed M. and Shirley, Andrew and Rodrigues, Natercia Das Neves and Cunningham, Ethan M. and Yang, Shengfu and Ellis, Andrew M. (2016) Communication: Infrared spectroscopy of salt-water complexes. The Journal of Chemical Physics, 144 (12). ISSN 0021-9606

[img]
Preview
Text
Published JCP NaClwater complexes.pdf - Published Version

Download (1MB) | Preview
Official URL: http://dx.doi.org/10.1063/1.4945342

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.

Item Type: Article
Uncontrolled Keywords: infrared spectroscopy; salt-water complexes
Subjects: 500 Natural Sciences and Mathemetics > 530 Physics
500 Natural Sciences and Mathemetics > 540 Chemistry & allied sciences
Department: School of Human Sciences
Depositing User: Jonathan Tandy
Date Deposited: 21 Jun 2016 10:29
Last Modified: 21 Jun 2016 10:29
URI: http://repository.londonmet.ac.uk/id/eprint/1022

Actions (login required)

View Item View Item