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Intermolecular interaction of carbon disulfide under pressure (high pressure and effective negative solvation pressure)
Author(s) -
Ishibashi Y.,
Mishina T.,
Nakahara J.
Publication year - 2006
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200541065
Subject(s) - intermolecular force , intramolecular force , dilution , solvation , chemistry , raman spectroscopy , heptane , molecule , carbon disulfide , phase (matter) , thermodynamics , organic chemistry , physics , optics
Raman spectra of liquid carbon disulfide (CS 2 ) were measured under high pressures and in dilution with ethanol and with heptane. The pressure and concentration dependences of the molecular vibration modes ν 1 and 2 ν 2 of CS 2 are discussed. The intermolecular distance changes simultaneously with concentration and pressure. In addition, dilution also varies the environment around the CS 2 molecule. The derivative of the intermolecular interaction energy is obtained from the frequency shift from the gas phase to the liquid phase of the ν 1 and 2 ν 2 vibrations. The results show that dilution effectively acts as negative pressures, where the intermolecular distance between CS 2 molecules increases in the mixtures with ethanol and heptane. These effective pressures and pressures give the change in the intramolecular double bond between carbon and sulfur atoms. But, these give a different effect for the damping of vibrations. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)