Abstract
Infrared spectra of three kinds of ethylidene dialkyl ethers (CH3OCH(CH3)OCH3; EDM, CH3OCH(CH3)OC2H5; EME and C2H5OCH·(CH3)OC2H5; EDE), of vapor at various temperatures, and of carbon tetrachloride and acetonitrile solutions are presented. From a comparison of the spectra obtained, it has been concluded that rotational isomerism could at least exist in EME and EDE. Raman spectra of pure liquid have been obtained, together with the degree of depolarization. The assignment of these spectra is given by referring to those of the homologues, such as dialkoxy methanes.

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