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Photoelectron Circular Dichroism of a Model Anionic System

Photoelectron circular dichroism in the one-photon detachment of a model methane-like chiral anionic system is studied theoretically by the single center method. The computed chiral asymmetry, characterized by the dichroic parameter $β_1$ of up to about $\pm3\%$, is in a qualitative agreement with very recent experimental observations on photodetachment in amino acid anions [P. Krüger and K.-M. Weitzel, Angew. Chem. Int. Ed. 60, 17861 (2021)]. Our findings confirm a general assumption that the magnitude of PECD is governed by the ability of an outgoing photoelectron wave packet to accumulate characteristic chiral asymmetry from the short-range part of the molecular potential.