Dissociative electron attachment to glycyl-glycine, glycyl-alanine and alanyl-alanine

被引：23

作者：

Muftakhov, M. V. ^{[1
]}

Shchukin, P. V. ^{[1
]}

机构：

[1] Russian Acad Sci, Ufa Res Ctr, Inst Mol & Crystal Phys, Ufa 450075, Russia

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2011年 / 13卷 / 10期

基金：

俄罗斯基础研究基金会;

关键词：

GAS-PHASE GLYCINE; ACID; FRAGMENTATION; PATHWAYS; CAPTURE;

D O I：

10.1039/c0cp00940g

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 processes of negative ions formation of dipeptides glycyl-glycine, glycyl-alanine and alanyl-alanine in the conditions of resonant electron capture have been studied with a help of negative ions mass spectrometry. Using a thermochemical approach, the main channels of fragment negative ions formation were found and the structure of the ions were established. The isobaric ions have been identified by the experiments with high mass resolution. The cross sections of fragment ions formation were measured. The metastable fragmentation of [M-H](-) and [M-COOH](-) ions in the energy range 4.5-7.5 eV have been found.

引用

页码：4600 / 4606

页数：7

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