Abstract

Spectroscopic properties of 21 electronic states of PtN are computed using complete active space multiconfiguration self-consistent field computations followed by first-order configuration interaction computations. Potential energy curves of several electronic states of PtN are reported. The multireference singles + doubles configuration interaction and the relativistic configuration interaction techniques are used to compare the properties of the low-lying states. Results of our computations agree not only with the known spectra of PtN but also predict several new electronic states which are yet to be observed.

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