Analysis of the v1 and v2 Fundamentals in Deuterium Sulfide

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Abstract
The fundamental infrared spectra of gaseous deuterium sulfide have been measured with several grating instruments. The spectra have been analyzed, with the aid of computer programs, to give rotational constants and band centers. For the latter we find v1=1896.38 and v2=855.5 cm−1; very little evidence of v3 was detected. Both bands show a strong intensity anomaly, similar to that of hydrogen sulfide; a classical centrifugal distortion theory, previously applied to it, accounts for the anomaly in deuterium sulfide also. The effect of centrifugal distortion on the energy levels was computed by the Kivelson—Wilson method.

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