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Raman spectra have been obtained for H2S and D2S as gas, liquid and solid. Only one frequency has been obtained in the gas and liquid although three are permitted by the selection principles. In the solids, a single line and a close doublet have been obtained. With the available infra-red and Raman data, it is not possible to make quantitative calculations of isotope effect, force constants, angle or anharmonic factors.
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Murphy et al. (1938) studied this question.
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