Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Infrared Spectra of Crystalline CHCl3 and CDCl3
Arata KimotoHaruka Yamada
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1968 Volume 41 Issue 5 Pages 1096-1104

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Abstract

The infrared spectra for the fundamental absorption bands, ν1, ν2, ν4 and ν5, of CHCl3 and CDCl3 have been measured in polycrystalline films. For the C–H or C–D bending band a triplet has been observed in the pure crystal. The spectra of a mixed crystal (CHCl3: CDCl3) have also been studied over the entire concentration range. The space group of crystalline chloroform has been determined to be D2h16. The intensity of the band changes, going from the gas to the solid, depending on the symmetry species to which the vibrational mode belongs; the A1 bands increase in intensity, while the E bands decrease. The C–H stretching band shows an especially remarkable increase.

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