Investigation of the structure of concentrated aqueous solution of LiCl atlow temperatures by the method of integral equations

Citation
Rd. Oparin et al., Investigation of the structure of concentrated aqueous solution of LiCl atlow temperatures by the method of integral equations, RUSS CHEM B, 48(10), 1999, pp. 1858-1863
Citations number
27
Categorie Soggetti
Chemistry
Journal title
RUSSIAN CHEMICAL BULLETIN
ISSN journal
10665285 → ACNP
Volume
48
Issue
10
Year of publication
1999
Pages
1858 - 1863
Database
ISI
SICI code
1066-5285(199910)48:10<1858:IOTSOC>2.0.ZU;2-G
Abstract
Peculiarities of the formation of the structure of aqueous LiCl solution (a t a salt : water molar ratio of 1 : 5.3) in the temperature range 298-138 K were studied by the method of integral equations. Analysis of the results obtained suggests that transition of the system into the supercooled and gl assy state is accompanied by an increase in the tetrahedral ordering of sol vent molecules and a decrease in the number of interactions between the wat er molecules in unbound solvent. Lowering the temperature leads to an incre ase in the degree of structurization of water molecules surrounding the cat ion. Preferable formation of hydrogen bonds with the anion under extreme co nditions was established. The glassy state of the solution is characterized by the absence of direct anion-cation correlations and increased (compared to standard conditions) probability of the formation of ion-water chains.