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New Electronic Band-Systems of Diatomic Boron Compounds (BF, BO and BH)


As is well known in the series of the isoelectronic molecules N2, CO and BF, nitrogen and carbon monoxide show a close similarity not only in their chemical but also in their spectroscopic properties, that is, in the structure of their excited states. The ground-state of both N2 and CO is saturated (1∑) and both have systems of analogous singlet and triplet levels. However, the data hitherto recorded of BF, the least symmetrical of the above-mentioned molecules, show no evident similarity, and therefore it has been suggested in the tables of Herzberg and of Gaydon1 that the ground-state of BF had escaped observation.

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  1. Herzberg, "Molekülspektren" (1939). Gaydon, "Dissociation Energies" (1947).

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  2. Miesher, Helv. Phys. Acta, 8, 279 (1935).

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  3. Douglas, Canad. J. Res., A, 19, 27 (1941).

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CHRÉTIEN, M., MIESCHER, E. New Electronic Band-Systems of Diatomic Boron Compounds (BF, BO and BH). Nature 163, 996–997 (1949).

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