Three-body deprotonation fragmentation dynamics of C6H63+ induced by electron-impact ionization

被引：2

作者：

Xue, Xiaorui ^{[1
]}

Zhou, Jiaqi ^{[1
]}

Hao, Xintai ^{[1
]}

Jia, Shaokui ^{[1
]}

Zeng, Qingrui ^{[1
]}

Ren, Xueguang ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Phys, MOE Key Lab Nonequilibrium Synth & Modulat Condens, Xian 710049, Peoples R China

来源：

JOURNAL OF CHEMICAL PHYSICS | 2024年 / 161卷 / 12期

基金：

中国国家自然科学基金;

关键词：

MOMENTUM SPECTROSCOPY; RECOIL-ION; BENZENE; DISSOCIATION; PATHWAYS; ENERGY; COLLISIONS; MOLECULES;

D O I：

10.1063/5.0232319

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：

The three-body fragmentation dynamics of benzene trications C6H63+ induced by 200 eV electron-impact produced by a photoemission cathode is investigated. All three fragment ions are detected in coincidence, and their momentum vectors are determined by employing a COLTRIMS reaction microscope. The detailed kinematical information of three deprotonation fragmentation channels of H+ + C3H2+ + C3H3+, H+ + C2H3+ + C4H2+, and H+ + C2H2+ + C4H3+ are obtained. By analyzing the momentum and energy correlation spectra among all the three fragment ions, we find that all the three channels are primarily generated by sequential fragmentation processes. Each channel has two deprotonation pathways, corresponding to proton emission in the first or second step of sequential fragmentation, respectively. These results provide insight into the mechanisms and dynamics of deprotonation and ring-breaking reactions in the three-body fragmentation processes of aromatic ring molecules.

引用

页数：8

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