Journal of Molecular Structure p. 203 - 214 (1982)
Update date:2022-08-16
Topics:
Eysel, H. H.
Raman spectra of solid S7Se have been recorded both at room temperature and at low temperatures down to ca. 30 K.Abnormal half-widths of the low-temperature spectra compared with those of S8 indicate that an ordered phase of S7Se does not exist.Simultaneous calculations of a valence force field for (32)S8, (34)S8 and S7Se yielded a refined force field for elemental sulphur along with the force constants of SSe bonds and SSeS angle deformations.The observed frequencies are reproduced to within 0.5percent for all three molecules.
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