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The electron impact induced fragmentation of 1,3‐diphenyl‐2‐pyrazoline
Author(s) -
Srzić D.,
Klasinc L.,
Noppel H. E.,
Güsten H.
Publication year - 1978
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.1210130108
Subject(s) - fragmentation (computing) , pyrazoline , ion , chemistry , electron ionization , mass spectrum , deuterium , kinetic energy , mass spectrometry , spectroscopy , electron , nitrogen , analytical chemistry (journal) , atomic physics , medicinal chemistry , physics , organic chemistry , nuclear physics , quantum mechanics , chromatography , computer science , ionization , operating system
The electron impact induced fragmentation of 1,3‐diphenyl‐2‐pyrazoline was studied by nitrogen‐15, carbon‐13 and deuterium labelling, substitution in the para position of one of the phenyl rings by fluoro and methoxy groups, and ion kinetic energy spectroscopy, as well as accurate mass measurements. In the fragmentation pathway observed all the ions in the mass spectrum of 1,3‐diphenyl‐2‐pyrazoline (except m / e 103) originate from the molecular ion, which in all compounds is the base peak. The formation of prominent fragment ions is discussed.