On the existence of the hypervalent H3O, H2DO, HD2O, and D3O radicals

被引：6
|
作者：
Hvelplunda, Preben [1 ]
Nielsen, Steen Brondsted [1 ]
Panjaa, Subhasis [1 ]
Pedersen, Jens Olaf Pepke [2 ]
Uggerud, Einar [3 ,4 ]
机构：
[1] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus, Denmark
[2] Tech Univ Denmark, Natl Space Inst, DK-2100 Copenhagen, Denmark
[3] Univ Oslo, Ctr Theoret & Computat Chem, N-0315 Oslo, Norway
[4] Univ Oslo, Mass Spectrometry Lab, Dept Chem, N-0315 Oslo, Norway
来源：
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY | 2009年 / 281卷 / 1-2期
关键词：
Oxonium radicals; Neutral reionization; Charge reversal; Electron transfer; Kinetic isotope effect; ELECTRON-TEMPERATURE DEPENDENCE; ION-BEAM TECHNIQUES; DISSOCIATIVE RECOMBINATION; H3O&.(H2O)N-SERIES IONS; BRANCHING RATIOS; CAPTURE; NH4;
D O I：
10.1016/j.ijms.2008.12.004
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
The existence of oxonium radicals on the microsecond time scale has been up for much debate, and strong isotope effects have been reported. Here we show that H3O, H2DO, HD2O, and D3O all have subnanosecond lifetimes when they are formed in charge-transfer collisions between oxonium cations and cesium. A kinetic isotope effect on hydrogen versus deuterium loss from HD2O was found to be 2.4, similar to that found in dissociative recombination of HD2O+ and for dissociation after electron transfer to HD2O+ from potassium. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：52 / 54
页数：3
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