The hydration structure around chloride ions in aqueous solution

D. Hugh Powell; Adrian C. Barnes; John E. Enderby; George W. Neilson; Philip S. Salmon

doi:10.1039/DC9888500137

The hydration structure around chloride ions in aqueous solution

D. Hugh Powell, Adrian C. Barnes, John E. Enderby, George W. Neilson, Philip S. Salmon

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Abstract

The hydration structure around chloride ions has been determined for several heavy water electrolyte solutions at various concentrations by the first-order difference method of neutron diffraction. Particular attention has been focused on aqueous zinc chloride solutions, for which results are now available. The following conclusions have been drawn from these data: (1) the chloride-water radial distribution function has a similar form in all solutions studied and is consistent with a well defined hydration geometry, with the Cl - D nearest neighbour distance, r_CID, in the range 2.2 < r_CID/Å < 2.3 and a nearly linear Cl - D - O arrangement; (2) the number of water molecules in the first coordination shell of Cl^- (the hydration number, n_D) is ≲6 and depends on both the ionic strength and the type of cation.

Original language	English
Pages (from-to)	137-146
Number of pages	10
Journal	Faraday Discussions of the Chemical Society
Volume	85
DOIs	https://doi.org/10.1039/DC9888500137
Publication status	Published - 1 Dec 1988

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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title = "The hydration structure around chloride ions in aqueous solution",

abstract = "The hydration structure around chloride ions has been determined for several heavy water electrolyte solutions at various concentrations by the first-order difference method of neutron diffraction. Particular attention has been focused on aqueous zinc chloride solutions, for which results are now available. The following conclusions have been drawn from these data: (1) the chloride-water radial distribution function has a similar form in all solutions studied and is consistent with a well defined hydration geometry, with the Cl - D nearest neighbour distance, rCID, in the range 2.2 < rCID/{\AA} < 2.3 and a nearly linear Cl - D - O arrangement; (2) the number of water molecules in the first coordination shell of Cl- (the hydration number, nD) is ≲6 and depends on both the ionic strength and the type of cation.",

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T1 - The hydration structure around chloride ions in aqueous solution

AU - Powell, D. Hugh

AU - Barnes, Adrian C.

AU - Enderby, John E.

AU - Neilson, George W.

AU - Salmon, Philip S.

PY - 1988/12/1

Y1 - 1988/12/1

N2 - The hydration structure around chloride ions has been determined for several heavy water electrolyte solutions at various concentrations by the first-order difference method of neutron diffraction. Particular attention has been focused on aqueous zinc chloride solutions, for which results are now available. The following conclusions have been drawn from these data: (1) the chloride-water radial distribution function has a similar form in all solutions studied and is consistent with a well defined hydration geometry, with the Cl - D nearest neighbour distance, rCID, in the range 2.2 < rCID/Å < 2.3 and a nearly linear Cl - D - O arrangement; (2) the number of water molecules in the first coordination shell of Cl- (the hydration number, nD) is ≲6 and depends on both the ionic strength and the type of cation.

AB - The hydration structure around chloride ions has been determined for several heavy water electrolyte solutions at various concentrations by the first-order difference method of neutron diffraction. Particular attention has been focused on aqueous zinc chloride solutions, for which results are now available. The following conclusions have been drawn from these data: (1) the chloride-water radial distribution function has a similar form in all solutions studied and is consistent with a well defined hydration geometry, with the Cl - D nearest neighbour distance, rCID, in the range 2.2 < rCID/Å < 2.3 and a nearly linear Cl - D - O arrangement; (2) the number of water molecules in the first coordination shell of Cl- (the hydration number, nD) is ≲6 and depends on both the ionic strength and the type of cation.

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The hydration structure around chloride ions in aqueous solution

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