Low-energy photoelectron imaging of HS2 anion

被引:3
作者
Qin, Zhengbo [1 ,2 ]
Cong, Ran [2 ]
Liu, Zhiling [1 ]
Xie, Hua [1 ]
Tang, Zichao [1 ]
机构
[1] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
[2] Anhui Normal Univ, Dept Phys, Wuhu 241000, Anhui, Peoples R China
基金
中国国家自然科学基金;
关键词
HYDROGEN-SULFIDE; OXYGEN-ATOMS; SPECTROSCOPY; KINETICS; SPECTRA; THERMOCHEMISTRY; PHOTODETACHMENT; MOLECULES; STATE; NO2;
D O I
10.1063/1.4901978
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Low-energy photoelectron imaging of HS2- has been investigated, which provides the vibrational frequencies of the ground state as well as the first excited state of HS2. It allows us to determine more accurate electron affinity of HS2, 1.9080 +/- 0.0018 eV. Combined with Frank-Condon simulation, the vibrational features have been unveiled related to S-S stretching and S-S-H bending modes for the ground state and S-S stretching, S-S-H bending, and S-H stretching modes for the first excited state. Photoelectron angular distributions are mainly characteristic of electron detachment from two different molecular orbitals (MOs) in HS2-. With the aid of accurate electron affinity value of HS2, corresponding thermochemical quantities can be accessed. (C) 2014 AIP Publishing LLC.
引用
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页数:5
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