Abstract
Molecular dynamics calculations were carried out for molten MX, AX3, and MAX4 for four different ionic radius ratios. The aim was to emulate expected properties of binary mixtures of complexing molten salts such as chloroaluminates and fluoroyttriates. The radial distribution functions were analyzed along with the distributions of the coordination numbers and of the angles of the A–A–A, A–X–A, and X–A–X triplets; these calculations yield detailed information on the nature and extent of the species in solution. The influence of changes of cation/anion radius ratios on the overall structure as well as on the formation and stability of complexes has been examined. For the two extreme values of these ratios, the nearest neighbor coordination number of A+3 ions changed from four to about six. One of the most significant conclusions is that the structure and ordering characteristic of complexing can extend beyond the local configurations of nearest neighbors and involve more distant ions. In addition, typical behavior often ascribed in the literature to covalency is detected in these simulated purely ionic melts.
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Dates
Type | When |
---|---|
Created | 22 years, 5 months ago (Feb. 28, 2003, 12:18 p.m.) |
Deposited | 1 year, 6 months ago (Feb. 9, 2024, 8:48 p.m.) |
Indexed | 1 year, 4 months ago (April 1, 2024, 9:54 a.m.) |
Issued | 41 years, 5 months ago (March 1, 1984) |
Published | 41 years, 5 months ago (March 1, 1984) |
Published Print | 41 years, 5 months ago (March 1, 1984) |
@article{Saboungi_1984, title={Molecular dynamics studies of complexing in binary molten salts. I. Molten MAX4}, volume={80}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.446979}, DOI={10.1063/1.446979}, number={5}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Saboungi, Marie-Louise and Rahman, A. and Blander, Milton}, year={1984}, month=mar, pages={2141–2150} }