Determination by the mass spectrometric Knudsen cell method and discussion of the dissociation energies of the molecules Se2(g), SSe(g) and SeTe(g)
- 1 January 1977
- 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. 73 (7) , 1755-1767
- https://doi.org/10.1039/f29777301755
Abstract
The dissociation energies of the molecules Se2(g), SSe(g) and SeTe(g), D° 0(Se2)= 78.1 ± 2.0, D° 0(SSe)= 87.8 ± 1.6 and D° 0(SeTe)= 70.1 ± 1.2 kcal mol–1 are determined by the mass spectrometric Knudsen cell method. For Se2, the result confirms the higher of two spectroscopically possible values, D° 0(Se2)= 78.65 ± 0.06 kcal mol–1, which has not been favoured hitherto on spectroscopic grounds. The spectroscopic observations are, therefore, critically examined to show that they allow this value.Keywords
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