Slow photoelectron velocity-map imaging spectroscopy of C3O- and C3S-.
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.
Garand
Etienne
E
Department of Chemistry, University of California, Berkeley, California 94720, USA.
Yacovitch
Tara I
TI
Neumark
Daniel M
DM