Far-infrared and Raman spectra, powder x-ray diffraction, and symmetry of crystalline ethylene oxide

Abstract
The x‐ray diffraction pattern of powdered oxirane at 90°K, the far‐infrared spectrum of polycrystalline oxirane at 4.3°K, and polarized Raman spectra of oriented crystals of oxirane between 125 and 22°K, are reported. The spectra of the solid are reassigned and crystalline oxirane is found to belong to the monoclinic system, crystal class C2h, with four molecules on general positions in the primitive unit cell.