Premium
Mass spectrometry—II: The unimolecular decomposition of benzaldehyde azine in the gas phase induced by electron‐impact
Author(s) -
Scheppele Stuart E.,
Grigsby Ronald D.,
Kinneberg Keith F.,
Mitchell Earl D.,
Mannan Claude A.
Publication year - 1970
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.1210030505
Subject(s) - azine , benzaldehyde , chemistry , fragmentation (computing) , mass spectrum , acetophenone , ketene , ion , mass spectrometry , photochemistry , electron ionization , medicinal chemistry , analytical chemistry (journal) , organic chemistry , ionization , catalysis , chromatography , computer science , operating system
The mass spectra of benzaldehyde azine‐α, αA‐d 2 (III) and benzaldehyde azine‐d 10 (IV) reveal that both ring and α hydrogen are lost from the molecular ion of benzaldehyde azine (II) in forming the [M –1] ion. Data from the spectra of III and IV at 70 eV and reduced ionizing voltages are consistent with the existence of two competing pathways producing [M –1] ions. Rearrangement ions are observed in the spectra of II. Randomization is unimportant in the electron‐impact‐induced fragmentation reactions of II. The rearrangement‐fragmentation reactions for II in general parallel those previously observed for acetophenone azine (I).