An incoherent quasi-elastic neutron scattering study on the dynamics of aqueous Cr3+ perchlorate solutions

P. S. Salmon, G. J. Herdman, J. Lindgren, M. C. Read, M. Sandstrom

Research output: Contribution to journalArticle


The technique of high-resolution, incoherent quasi-elastic neutron scattering (IQENS) is applied to a 1.790 molal (mol kg-1) solution of Cr(ClO4)3 at 26+or-1 degrees C. The results are consistent with a dynamic hydration number of six water molecules, each having a Cr3+-water-proton binding time described by the limit tau 1>or approximately=5*10-9 s. The results do not show a second shell of water protons in slow exchange with the cation, which implies a Cr3+ to second-shell water-proton binding time that is <5*10-9 s. Values for the water-proton translational self-diffusion coefficients are presented.

Original languageEnglish
Article number007
Pages (from-to)3459-3468
Number of pages10
JournalJournal of Physics: Condensed Matter
Issue number22
Publication statusPublished - 1 Dec 1989

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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