Abstract
For diatomic MPo molecules, where M = La to Lu, Fenochka and Gordienko [1] have estimated dissociation energies from a model of electron distribution in diatomic rare earth chalcogenide molecules. For rare earth selenides and tellurides, the same model gave dissociation energies which were higher than the experimental values throughout by up to 30 kcal/mol; cf. p. 2 and “Rare Earth Elements” C9, 1986, p. 4. The interatomic distances Sc-Po, Y-Po, and La-Po are 2.62, 2.72, and 2.77 Å, respectively; they were obtained with an empirical relation for diatomic molecules by Spiridonov, Tatevskii [2].
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References
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Hinz, I., Kuhn, P., Vetter, U., Warkentin, E., Bergmann, H., Hein, H. (1986). Rare Earth Elements and Polonium. In: Bergmann, H., Hein, H., Hinz, I., Vetter, U. (eds) Sc, Y, La-Lu Rare Earth Elements. Gmelin Handbook of Inorganic Chemistry / Gmelin Handbuch der Anorganischen Chemie, vol S-c... / C / 10. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-06366-8_2
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