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Metastable ion studies of various C 3 H 6 radical cations
Author(s) -
Gross Michael L.,
Lin PingHuang
Publication year - 1973
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210070705
Subject(s) - ion , metastability , isomerization , fragmentation (computing) , chemistry , decomposition , ion cyclotron resonance , fourier transform ion cyclotron resonance , propene , analytical chemistry (journal) , atomic physics , physics , cyclotron , organic chemistry , catalysis , computer science , operating system
Metastable abundance ratios have been measured involving four decomposition reactions of C 3 H 6 radical cations formed from a variety of precursors. The ratios are quite similar in accord with extensive isomerization to a propene structure prior to fragmentation. Small, yet constant differences are observed for those C 3 H 6 ions which have been shown to be formed as cyclic ions by ion cyclotron resonance studies. The differences are interpreted to reflect internal energy variations, which result because the initially formed ions have two different structures. The abundance ratios are shown to depend on ionizing energy, repeller voltage and accelerating voltage, but are independent of the degrees‐of‐freedom in the precursor as well as the number of steps necessary to produce the [C 3 H 6 ] +· Despite small variations in metastable ratios, the classification of various [C 3 H 6 ] +· ions can be achieved under a variety of conditions which affect the internal energy of the decomposing ions.