Structure of molten trivalent metal chlorides

Jonathan C. Wasse; Philip S. Salmon

doi:10.1016/S0921-4526(97)00767-9

Structure of molten trivalent metal chlorides

Jonathan C. Wasse, Philip S. Salmon

University of East Anglia

Research output: Contribution to journal › Article › peer-review

30 Citations (SciVal)

Abstract

Neutron diffraction was used to measure the structure of molten ScCl₃, YCl₃ and LaCl₃ to investigate its dependence on cation size: as the cation radius decreases in the order La³⁺, Y³⁺, Sc³⁺ there is a corresponding increase in the 'covalent' contribution to the bonding. In the transition from the (high temperature) crystalline to the liquid phase, the coordination number of chloride ions around the cation reduces from 9 to ≈6.4 in LaCl₃, changes little from 6 to 5.7(4) in YCl₃, and decreases from 6 to 4.8(2) in ScCl₃. The data will allow for a test of the extent to which recently developed polarizable ion models can account for the observed structural trends.

Original language	English
Pages (from-to)	967-969
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	241-243
DOIs	https://doi.org/10.1016/S0921-4526(97)00767-9
Publication status	Published - 1 Dec 1997

Keywords

Bonding
Liquid structure
Molten salts
Neutron diffraction

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/S0921-4526(97)00767-9

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title = "Structure of molten trivalent metal chlorides",

abstract = "Neutron diffraction was used to measure the structure of molten ScCl3, YCl3 and LaCl3 to investigate its dependence on cation size: as the cation radius decreases in the order La3+, Y3+, Sc3+ there is a corresponding increase in the 'covalent' contribution to the bonding. In the transition from the (high temperature) crystalline to the liquid phase, the coordination number of chloride ions around the cation reduces from 9 to ≈6.4 in LaCl3, changes little from 6 to 5.7(4) in YCl3, and decreases from 6 to 4.8(2) in ScCl3. The data will allow for a test of the extent to which recently developed polarizable ion models can account for the observed structural trends.",

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T1 - Structure of molten trivalent metal chlorides

AU - Wasse, Jonathan C.

AU - Salmon, Philip S.

PY - 1997/12/1

Y1 - 1997/12/1

N2 - Neutron diffraction was used to measure the structure of molten ScCl3, YCl3 and LaCl3 to investigate its dependence on cation size: as the cation radius decreases in the order La3+, Y3+, Sc3+ there is a corresponding increase in the 'covalent' contribution to the bonding. In the transition from the (high temperature) crystalline to the liquid phase, the coordination number of chloride ions around the cation reduces from 9 to ≈6.4 in LaCl3, changes little from 6 to 5.7(4) in YCl3, and decreases from 6 to 4.8(2) in ScCl3. The data will allow for a test of the extent to which recently developed polarizable ion models can account for the observed structural trends.

AB - Neutron diffraction was used to measure the structure of molten ScCl3, YCl3 and LaCl3 to investigate its dependence on cation size: as the cation radius decreases in the order La3+, Y3+, Sc3+ there is a corresponding increase in the 'covalent' contribution to the bonding. In the transition from the (high temperature) crystalline to the liquid phase, the coordination number of chloride ions around the cation reduces from 9 to ≈6.4 in LaCl3, changes little from 6 to 5.7(4) in YCl3, and decreases from 6 to 4.8(2) in ScCl3. The data will allow for a test of the extent to which recently developed polarizable ion models can account for the observed structural trends.

KW - Bonding

KW - Liquid structure

KW - Molten salts

KW - Neutron diffraction

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EP - 969

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

ER -

Structure of molten trivalent metal chlorides

Abstract

Keywords

ASJC Scopus subject areas

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