Elsevier

Chemical Physics

Volume 111, Issue 1, 1 January 1987, Pages 47-53
Chemical Physics

Spin-orbit interaction in the excited states of the dihalogen ions F+2, Cl+2 and Br+2

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Abstract

The 2IIu state of Br+2 shows an unusually large difference between the vibrational frequencies of its two spin-orbit components. It is shown that this can be understood from the combined effects of correlation and spin-orbit interaction, which is largely due to the partial localisation of the hole in the ion. The same mechanism can be held responsible for vibrational and rotational anomalies in the corresponding state of Cl+2 and F+2.

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