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 Why is the CO2-CS2 non-ideality larger than in CO2-CCl4? A Raman scattering study
Please use this identifier to cite or link to this item http://hdl.handle.net/10773/19599

title: Why is the CO2-CS2 non-ideality larger than in CO2-CCl4? A Raman scattering study
authors: Besnard, M.
Cabaco, M. I.
Coutinho, J. A. P.
Danten, Y.
keywords: INTERACTION-INDUCED SPECTRA
LIQUID CARBON-DISULFIDE
COMPLEX-FORMATION
CS2
MIXTURES
DIOXIDE
CO2
SOLVENTS
TEMPERATURE
CO2-ACETONE
issue date: 2013
publisher: ELSEVIER SCIENCE BV
abstract: The dense phases of the CO2-CCl4 (I) and CO2-CS2 (II) mixtures have been studied by Raman spectroscopy. Mixture I is found almost ideal and II strongly non-ideal. At high CS2 concentration in II, the local structure of CS2 is preserved suggesting a nano-segregation of the liquid phase without demixing whereas in CO2 concentrated mixtures a diversity of species are present. Thermodynamical considerations together with spectroscopic results show that a subtle interplay between attractive and repulsive interactions leads to this non-ideal behaviour. The connection of these results with the liquid-liquid demixing reported for CO2-CS2 at lower temperature is discussed. (C) 2013 Elsevier B. V. All rights reserved.
URI: http://hdl.handle.net/10773/19599
ISSN: 0009-2614
publisher version/DOI: http://doi.org/10.1016/j.cplett.2013.07.061
source: CHEMICAL PHYSICS LETTERS
appears in collectionsCICECO - Artigos

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