PHOTODETACHMENT AND RESONANT PHOTOELECTRON SPECTROSCOPY OF CRYOGENICALLY-COOLED PHENOXIDE ANIONS VIA DIPOLE-BOUND EXCITED STATES

Qian, Chen-hui

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https://hdl.handle.net/2142/100531 Copy

Description

Title

PHOTODETACHMENT AND RESONANT PHOTOELECTRON SPECTROSCOPY OF CRYOGENICALLY-COOLED PHENOXIDE ANIONS VIA DIPOLE-BOUND EXCITED STATES

Author(s)

Qian, Chen-hui

Contributor(s)

• Wang, Lai-Sheng
• Zhu, Guo-Zhu

Issue Date

06/22/18

Keyword(s)

Ions

Abstract

The phenoxide anion (C$_{6}$H$_{5}$O$^{–}$), with a large dipole moment of 4.0 D for its neutral core, can support an excited dipole-bound state (DBS) 97 \wn below the electron detachment threhold [Liu et al. Angew. Chem. Int. Ed. 52, 8976-8979 (2013)]. The vibrational mode-specific autodetachments from the vibrational levels of the DBS were first discovered in this system by high-resolution resonant photoelectron (PE) imaging. Here, we report a photodetachment spectrum of the phenoxide anion up to 2000 \wn above the detachment threshold. Several new vibrational peaks are observed due to autodetachment from combinational levels of the DBS. The corresponding resonant PE spectra show a clear peak due to the lowest-frequency bending mode, suggesting the possibility of a slight nonplanar structure for the phenoxy radical.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

English

Permalink

http://hdl.handle.net/2142/100531

DOI

10.15278/isms.2018.FE04

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