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Updated: Jun 21, 2026

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
Published on: July 27, 2018
Slow photoelectron velocity-map imaging spectroscopy of C3O- and C3S-
Etienne Garand1, Tara I Yacovitch, Daniel M Neumark
1Department of Chemistry, University of California, Berkeley, California 94720, USA.
Abstract:
High-resolution photodetachment spectra of C(3)O(-) and C(3)S(-) using slow photoelectron velocity-map imaging spectroscopy are reported. Well-resolved transitions to the neutral X (1)Sigma(+) state are seen for both species. The electron affinities of C(3)O and C(3)S are determined to be EA(C(3)O) = 1.237+/-0.003 eV and EA(C(3)S) = 1.5957+/-0.0010 eV, respectively. Several vibrational frequencies for gas phase C(3)O and C(3)S are determined for the first time. The long progression of bending modes observed in the spectra is consistent with electronic structure calculations predicting that the C(3)O(-) and C(3)S(-) have bent equilibrium geometries.
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