PHOTOCHEMISTRY OF SULFIDE DIMER CATIONS IN CLUSTERS OF DIMETHYL SULFIDE

被引：5

作者：

SYAGE, JA

POLLARD, JE

COHEN, RB

机构：

[1] Aerospace Corporation, Los Angeles, CA 90009

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1991年 / 95卷 / 22期

关键词：

D O I：

10.1021/j100175a029

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：

We report on wavelength-dependent photochemistry in dimethyl sulfide (DMS) cluster ions formed by resonance-enhanced multiphoton ionization and by electron-impact ionization. DMS cluster ionization leads to a stable dimer cation three-electron sulfur-sulfur bond with strong visible absorptions. Excitation in this spectral region promotes photoreaction to a cyclic C2H3S+ structure (thiirenium ion). Excitation at shorter wavelengths produces entirely different products. The photoreactions resemble solution-phase chemistry, whereas the electron-impact-induced cluster reactions are similar to gas-phase ion-molecule chemistry.

引用

页码：8560 / 8565

页数：6

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[51] MEASUREMENTS OF ELECTRON-IMPACT IONIZATION AND DISSOCIATION CROSS-SECTIONS IN A CROSSED ELECTRON-SUPERSONIC MOLECULAR-BEAM [J].