The structure of Cl- solutions in ethylene glycol studied by neutron diffraction

P. S. Salmon, P. B. Lond

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The method of isotopic substitution in neutron diffraction is applied to study the coordination environment of Cl- in a 0.999(3) molal solution of NaCl in fully deuterated ethylene glycol (EG). It is shown that the EG molecules act as monodentate ligands to give a Cl(EG)4 - complex that comprises Cl- . . . D-O hydrogen bonds which are approximately linear and of length 2.14(3) AA. The results are compared with those obtained for the Cl- coordination complex in aqueous and methanolic solution. It is found that there is a reduction from approximately=6 to approximately=4 in the number of ligands binding to Cl- on changing the solvent from water to EG and that, for all three solvents, the Cl- . . . D-O hydrogen bond is typically linear. The effect of a small hydrogen imbalance between the solutions used for isotopic substitution experiments is briefly considered.

Original languageEnglish
Article number002
Pages (from-to)5249-5262
Number of pages14
JournalJournal of Physics: Condensed Matter
Issue number23
Publication statusPublished - 1 Jan 1992

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics


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