Abstract
AbstractRaman and infrared spectra of solid CH2F2 (Freon 32) were recorded in both the lattice and internal mode regions for samples at temperatures between 12 and 115 K. No evidence of any solid‐state phase transition or of metastable phases was found. The spectra are consistent with a large unit cell, probably non‐centrosymmetric and containing eight molecules, with relatively loose packing compared with the other methylene halides. It is postulated that at temperatures near the melting point, the molecules undergo 180° rotational jumps which are gradually inhibited on cooling.
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