Vibrational Assignment and Force Constants of Cyclo Octaselenium, Se8, and of the Cyclo Tetraselenium(2+) Cation, Se4 2+
Open Access
- 1 November 1975
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung A
- Vol. 30 (11) , 1481-1484
- https://doi.org/10.1515/zna-1975-1118
Abstract
Force constants have been calculated for Se8 (α-monoclinic selenium) after reassigning the literature values of the fundamental frequencies and using a modified Urey-Bradley force field with six force constants. Very good agreement between observed and calculated frequencies was obtained and valence force constants were calculated. A non-linear relationship holds for SeSe stretching force constants and bond distances. Using the Se8 force constants the fundamental frequencies of the square-planar Se4 2+ were calculated and compared with the observed valuesKeywords
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