DMSO-water clustering in solution observed in soft X-ray spectra

Nicholas Engel, Kaan Atak, Kathrin M. Lange, Malte Gotz, Mikhail A. Soldatov, Ronny Golnak, Edlira Suljoti, Jan Erik Rubensson, Emad F. Aziz

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24 Citations (Scopus)

Abstract

The significant deviation from the ideality of dimethyl sulfoxide (DMSO)/water mixtures can be addressed based on the change of the local molecular orbitals of each solvent upon mixing. Oxygen K-edge absorption and emission spectra of DMSO/water solutions were measured using the liquid microjet technique. The spectra demonstrate that the hydrogen bond network in liquid water is already influenced at small DMSO concentrations, and at the molar fraction xDMSO = 0.43 we find strong evidence of DMSO-water clustering reflected by the influence on the occupied molecular orbitals.

Original languageEnglish
Pages (from-to)3697-3701
Number of pages5
JournalJournal of Physical Chemistry Letters
Volume3
Issue number24
DOIs
Publication statusPublished - 20 Dec 2012
Externally publishedYes

Keywords

  • Chemical and Dynamical Processes in Solution
  • Liquids

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