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Updated: Jul 19, 2026

10:37
Spatial Separation of Molecular Conformers and Clusters
Published on: January 9, 2014
Control of molecular fragmentation using binary phase-shaped femtosecond laser pulses
Vadim V Lozovoy1, Tissa C Gunaratne, Janelle C Shane
1Department of Chemistry, Michigan State University, East Lansing MI 4882, USA.
Abstract
No abstract available in PubMed .
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Mass Spectrometry: Molecular Fragmentation Overview
The ionization of a molecule into a molecular ion inside the mass spectrometer causes instability in the molecule's structure due to the loss of an electron. This eventually leads to the fragmentation or breaking of some bonds in the molecule. The fragmentation occurs predominantly at specific bonds to yield relatively stable fragments.
One type of fragmentation pattern is the cleavage of a single bond in the molecular ion. The cleavage leads to a radical and a cation. The cleavage can occur at...
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The fragmentation patterns observed for compounds such as carboxylic acids, esters, and amides in the mass spectra include ⍺-cleavage and McLafferty rearrangement. Fragmentation by ⍺-cleavage preferentially occurs at the carbon-carbon bond at the ⍺-position next to the carboxylic group to generate a neutral radical and a cation. Long chain compounds with hydrogen at their γ-carbon undergo McLafferty rearrangement to give a radical cation and a neutral alkene.
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