✦ LIBER ✦

High-pressure Raman study of liquid and crystalline carbonyl sulfide

✍ Scribed by H. Shimizu; Y. Ikeda; S. Sasaki

Publisher: Elsevier Science
Year: 1990
Tongue: English
Weight: 444 KB
Volume: 175
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(90)80123-u

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✦ Synopsis

High-pressure Raman spectra of liquid and crystalline carbonyl sulfide (COS) have been measured up to I5 GPa at 300 K in a gasketed diamond anvil cell. The liquid-solid transition pressure is determined to be 2.70 GPa at 300 K. 4n intermolecular Raman made is found in the solid phase, and its frequency shows the pressure-sensitive increase with a slope (dv/dP) of 10.6 cm-'/GPa. The pressure dependence of intramolecular Raman frequencies is investigated, and their characteristics are discussed and compared with the previous results in CO* and CS2, including the effect of Fermi resonance. A dark red modification of COS appears irreversibly at pressures above 17 GPa.

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