Short- and long-lived electronic states of BF[sup -]

Dreuw, A.; Sommerfeld, T.; Cederbaum, L. S.
April 2002
Journal of Chemical Physics;4/8/2002, Vol. 116 Issue 14, p6039
Academic Journal
Resonance states of BF[sup -] are studied with high-level ab initio methods. In analogy to the fundamental anions N[sup -, sub 2] and CO[sup -], the ²Π ground state of BF[sup -] has been found to be a short-lived shape-type resonance state exhibiting a lifetime of less than a femtosecond. In contrast, the lowest quartet state [sup 4]Σ[sup -] of BF[sup -] is clearly long-lived, since the decay channels via direct electron emission and dissociation are closed and all other possible decay channels are spin-forbidden. The lowest sextet state of BF[sup -] is also investigated. Connection to recently identified long-lived high-spin states of N[sup -, sub 2] and CO[sup -] is made and their relations are discussed.


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