Infra-red spectra of matrix-isolated MgF2
- 1 January 1975
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics
- Vol. 71, 1082-1090
- https://doi.org/10.1039/f29757101082
Abstract
Infra-red spectra of evaporated MgF2 isolated at liquid helium temperatures in neon, argon, krypton, xenon, nitrogen and carbon monoxide matrices are reported, in contrast to previous studies, the bands at 480 and 740 cm–1 are assigned to a dimeric molecular species, (MgF2)2, on the basis of the equivalent dependence of their intensities on the rate of deposition of MgF2 vapour. No symmetric stretching vibration was observed, which suggests a linear structure of MgF2. Deviations of the bond angle in MgF2 from 180° calculated from isotopic splittings of the asymmetric stretching mode v3 of MgF2 for the different matrices are similar to those obtained from previous studies. The small differences of the calculated angle from linearity could result from an inherent inaccuracy of the isotopic shift method for bond angles near 180°.Keywords
This publication has 0 references indexed in Scilit: