Infrared spectra and intensity enhancements in solutions of hydrogen halides in liquid xenon was written by Goldring, H.;Kwok, J.;Robinson, G. W.. And the article was included in Journal of Chemical Physics in 1965.Recommanded Product: 322-46-3 This article mentions the following:
The intensities and shapes of the vibrational fundamental bands of HCl, HBr, and HI dissolved in liquid Xe at 165°K. are examined While no rotational fine structure was observed, rotational branch maximum were exhibited in all 3 cases. The spectra of the dissolved mols. are different from those of the gaseous mol. in that they exhibit a strong Q branch and probably also O and S branches. This observation should be compared with spectra of H halides in dense gases where a Q branch is prominent, and with spectra of such mols. in solid rare gases where ordinarily a strong Q branch is not produced. The extended selection rules in the liquid are probably caused by anisotropic fields which are capable of mixing J states. In this sense, the rotational motions of the H halides in liquid Xe are not free. The large intensity enhancements, 2.8 for HCl, 3.1 for HBr, and 44 for HI, are inadequately explained on the basis of dielec. polarization effects. Nuclear distortion effects on the intensity enhancements are negligible. Electronic distortion effects must account for the enhancement. A semiquant. description based on the lowering of ionic states of the H halides in the presence of the dielec. medium indicates that for each of the halides studied â?/16 of an electron moves from the proton to the halogen when the mol. is dissolved. This is sufficient electronic distortion to account for the intensity enhancement in all 3 mols. This increased ionicity should be manifested not only in ir intensity enhancements but also in permanent dipole moment corrections for dissolved polar mols. The permanent moment corrections may exceed those given by the Onsager dielec. theory. In the experiment, the researchers used many compounds, for example, Pyrido[2,3-b]pyrazine (cas: 322-46-3Recommanded Product: 322-46-3).
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