An IR spectroscopic study of liquid ozone and ozone dissolved in liquid argon

作者：Bulanin K M^*; Kolomiitsova T D; Bertsev V V; Shchepkin D N

来源：Optics and Spectroscopy, 2013, 114(2): 216-224.

DOI：10.1134/S0030400X13020070

We have measured and interpreted the IR spectra of liquid ozone films at 78-85 K and ozone dissolved in liquid argon at 91-95 K. A less hindered rotation of ozone molecules in argon manifests itself as an intensity redistribution, caused by the Coriolis interaction, from the states nu(3)(B (1)) and nu(1) + nu(3)(B (1)) to the states nu(1)(A (1)) and 2 nu(1)(A (1)), respectively. The occurrence of wings in the contours of the bands nu(1)(A (1)), 2 nu(1)(A (1)), and 2 nu(3)(A (1)) in liquid Ar and their absence in the spectrum of O-3 also confirms the conclusion that the rotational motion of ozone molecules in an inert solvent at low temperatures is relatively less hindered. Maxima of ozone bands in Ar solution are shifted toward lower frequencies compared to those in the gas phase by 1-30 cm(-1), which corresponds to the following shifts of harmonic frequencies of the molecule: Delta omega(1) = -1.85(5) cm(-1), Delta omega(2) = -0.67(7) cm(-1), Delta omega(3)=-7.20(5) cm(-1). It was found that the absorption band of the nu(3) mode in the spectrum of O-3 in the liquid phase has a complicated asymmetric contour because of the resonance dipole-dipole interaction. The first and second spectral moments of this band have been determined to be M (1) = 1030.6 cm(-1) and M (2) = 240.0 cm(-2). DOI: 10.1134/S0030400X13020070

• 出版日期2013-2