Reflection-absorption FTIR study of SF6 thin films in combinational modes region

T. S. Kataeva, D. N. Shchepkin, O. S. Golubkova, R. E. Asfin

Research output: Contribution to journalArticlepeer-review


Reflection-absorption IR (RAIR) spectra of sulfur hexafluoride (SF6) crystalline thin films in 10–100 K temperature range and absorption FTIR spectra of thin layer (90 μm) of liquid SF6 near the melting point (Tm = 222 K) are recorded. Special attention is paid to combinational bands region. The three types of band behavior upon phase transitions are identified and illustrated by 3ν6, ν1+ ν3, ν2+ ν3, ν14 and ν54 bands. The contours of the latter bands uncharacteristically change upon phase transitions. The different behavior of those bands is explained by the various contributions of different band forming mechanisms, evaluated by the mathematical apparatus of spectral moments.

Original languageEnglish
Article number129051
Number of pages5
JournalJournal of Molecular Structure
StatePublished - 15 Jan 2021

Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy
  • Organic Chemistry
  • Inorganic Chemistry


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