Ionization and fragmentation of isomeric van der Waals complexes embedded in helium nanodroplets

The ionization and charge transfer processes, which occur when a doped helium droplet undergoes electron impact, are studied for droplets doped with van der Waals complexes with various structures and electrostatic moments. The mass spectra of the two isomers of hydrogen cyanide complexed with eithe...

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Bibliographic Details
Published inThe Journal of chemical physics Vol. 129; no. 20; pp. 201101 - 201101-4
Main Authors Lewis, William K., Lindsay, C. Michael, Miller, Roger E.
Format Journal Article
LanguageEnglish
Published United States American Institute of Physics 28.11.2008
Subjects
Acetylene - analogs & derivatives
Acetylene - chemistry
Electron Transport
Helium - chemistry
Hydrogen Cyanide - chemistry
Isomerism
Mass Spectrometry
Nanoparticles - chemistry
Nitriles - chemistry
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Summary:The ionization and charge transfer processes, which occur when a doped helium droplet undergoes electron impact, are studied for droplets doped with van der Waals complexes with various structures and electrostatic moments. The mass spectra of the two isomers of hydrogen cyanide complexed with either cyanoacetylene or acetylene in helium droplets were obtained using optically selected mass spectrometry, and show that the structure of the complex has a large effect on the fragmentation pattern. The resulting fragmentation pattern is consistent with an ionization process in which charge steering strongly influences the site of initial ionization. The observed dissociation products may also be subject to caging by the helium matrix.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0021-9606
1089-7690
1089-7690
DOI:10.1063/1.3025917