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

doi:10.1088/0953-8984/1/22/007

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

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Abstract

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 language	English
Article number	007
Pages (from-to)	3459-3468
Number of pages	10
Journal	Journal of Physics: Condensed Matter
Volume	1
Issue number	22
DOIs	https://doi.org/10.1088/0953-8984/1/22/007
Publication status	Published - 1 Dec 1989

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

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

abstract = "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.",

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AU - Salmon, P. S.

AU - Herdman, G. J.

AU - Lindgren, J.

AU - Read, M. C.

AU - Sandstrom, M.

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N2 - 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.

AB - 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.

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

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