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Concerning the structure and fragmentation of [C 3 H 7 O] + ions derived from alcohols
Author(s) -
Tsang C. W.,
Harrison A. G.
Publication year - 1971
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.1210050714
Subject(s) - fragmentation (computing) , chemistry , mass spectrum , electron ionization , cyclopropane , ion , deuterium , acetone , metastability , chemical ionization , mass spectrometry , ionization , photochemistry , organic chemistry , physics , atomic physics , chromatography , operating system , ring (chemistry) , computer science
The formation of [CH2OH] +. by fragmentation of [C3H7O] +. ions in the electron‐impact mass spectra of 2‐methyl‐2‐propanol and 2‐propanol has been investigated using 13C labeling, deuterium labeling and metastable studies. The similar fragmentation reaction in the chemical ionization mass spectrum of acetone has been studied. It is concluded that the fragmentation reaction does not involve complete randomization of the carbon atoms and therefore does not proceed through formation of a hydroxylated cyclopropane intermediate. Alternative mechanisms are discussed.