Density and temperature study of the noncoincidence effect in liquid carbon disulfide

✍ Scribed by S.L. Wallen; L. Nikiel; J. Yi; J. Jonas

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 549 KB
• Volume: 229
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(94)01023-4

✦ Synopsis

The noncoincidence of the anisotropic and isotropic peak frequencies in the allowed Raman ul vibrational mode of liquid CS2 is studied over an extended density range ( 1.18 to 1.58 g/cm3) by varying pressure (0.001 to 5.0 kbar) and temperature ( -55 to WC). The noncoincidence value is negative and the absolute value increases as a function of both increasing density, at constant temperature, and increasing temperature, at constant density. The noncoincidence of the anisotropic and isotropic peak frequencies is attributed to a quadrupole induced transition dipole coupling mechanism because changes in the noncoincidence value can be correlated with changes in the intensity of the forbidden V, infrared mode.