Why is the CO2-CS2 non-ideality larger than in CO2-CCl4? A Raman scattering study
authors Besnard, M; Cabaco, MI; Coutinho, JAP; Danten, Y
nationality International
journal CHEMICAL PHYSICS LETTERS
keywords INTERACTION-INDUCED SPECTRA; LIQUID CARBON-DISULFIDE; COMPLEX-FORMATION; CS2; MIXTURES; DIOXIDE; CO2; SOLVENTS; TEMPERATURE; CO2-ACETONE
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.
publisher ELSEVIER SCIENCE BV
issn 0009-2614
year published 2013
volume 583
beginning page 49
ending page 53
digital object identifier (doi) 10.1016/j.cplett.2013.07.061
web of science category Chemistry, Physical; Physics, Atomic, Molecular & Chemical
subject category Chemistry; Physics
unique article identifier WOS:000324304600010
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journal impact factor 1.686
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