Magnetic-Bottle and velocity-map imaging photoelectron spectroscopy of APS − (A=C 14 H 10 or anthracene): Electron structure, spin-orbit coupling of APS • , and dipole-bound state of APS −
Name
Cummins_Magnetic-Bottle and velocity-map imaging photoelectron spectroscopy of APS.pdf
Description
Published version
Size
2.61 MB
Format
Adobe PDF
Checksum (MD5)
547bbe81e0ef43daefc5359dbaeddbe2
Author(s)
Yuan, Qin-qin
Yang, Zheng
Li, Ren-zhong
Transue, Wesley J
Li, Zhi-peng
Jiang, Ling
Govind, Niranjan
Cummins, Christopher C
Wang, Xue-Bin
Date Issued
2018
Journal
Chinese Journal of Chemical Physics
Publisher
AIP Publishing
Version
Final published version
Abstract
© 2018 Chinese Physical Society. Gaseous dibenzo-7-phosphanorbornadiene P-sulfide anions APS- (A=C14H10 or anthracene) were generated via electrospray ionization, and characterized by magnetic-bottle photoelectron spectroscopy, velocity-map imaging (VMI) photoelectron spectroscopy, and quantum chemical calculations. The electron affinity (EA) and spin-orbit (SO) splitting of the APS• radical are determined from the photoelectron spectra and Franck-Condon factor simulations to be EA=(2.62±0.05) eV and SO splitting=(43±7) meV. VMI photoelectron images show strong and sharp peaks near the detachment threshold with an identical electron kinetic energy (eKE) of 17.9 meV at three different detachment wavelengths, which are therefore assigned to autodetachment from dipole-bound anion states. The B3LYP/6-31++G(d,p) calculations indicate APS• has a dipole moment of 3.31 Debye, large enough to support a dipole-bound electron.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
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DOI of Published Version
https://doi.org/10.1063/1674-0068/31/CJCP1805114
