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Updated: Mar 31, 2026

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
Published on: July 27, 2018
Photoelectron Imaging Spectroscopy of AuC3H(-) Anions: Four Isomers
Jing-Heng Meng1,2, Qing-Yu Liu1,2, Sheng-Gui He1
1Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, People's Republic of China.
Abstract:
Laser ablation generated AuC3H(-) anions were skimmed into a time-of-flight mass spectrometer (TOF-MS) and selected with a mass gate. Photoelectron spectra of AuC3H(-) were recorded using the velocity map imaging technique at several photon energies. The experimental spectra, quantum chemistry calculations, and Franck-Condon simulations suggest that the AuC3H(-) cluster has four structure isomers, including one unexpected structure of [C═C═C-Au-H](-). When AuC3H(-) is compared with C3H2(-), introduction of gold into the hydrocarbon system results in the much lower isomerization barriers.
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