Research output: Contribution to journal › Article › peer-review
IR spectra of the solution of SF6 molecules in liquid NF 3 at 84 K have been recorded. In a solvent transmission window of 1500-1750 cm-1, two wide absorption bands with pronounced peaks in the high-frequency part are observed. The profile of these bands is explained by the influence of the resonance dipole-dipole (RDD) interaction of the states of the simultaneous transition ν1(SF6) + ν3(NF3) and ν2(SF6) + ν3(NF3) with the states (ν1 + ν3) and (ν2 + ν3) of the SF 6 molecules, respectively. The use of three isotopic modifications 32SF6, 33SF6, and 34SF6 has allowed us to vary the resonance detuning and thus to change the strength of the RDD interaction. With the liquid near the melting point being represented as a close-packed cubic crystal, the profile was calculated and its spectral characteristics were determined. The frequencies of the main peaks coincide with the experimental values accurate to the error.
Original language | English |
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Pages (from-to) | 533-543 |
Number of pages | 11 |
Journal | Optics and Spectroscopy (English translation of Optika i Spektroskopiya) |
Volume | 108 |
Issue number | 4 |
DOIs | |
State | Published - 1 Apr 2010 |
ID: 49683544