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A study of negative ions from substituted benzils
Author(s) -
Dillard John G.,
O'Toole J. Herb.,
Ogliaruso Michael A.
Publication year - 1975
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.1210100906
Subject(s) - ion , mass spectrum , chemistry , spectral line , chlorine , analytical chemistry (journal) , organic chemistry , physics , astronomy
The mass spectra and the appearance potentials for the negative ions from a number of 4‐substituted and 4,4′‐disubstituted benzils, containing CH 3 , CH 3 O, CH 3 S, (CH 3 ) 2 N and NO 2 substituents have been measured. Molecular anions were observed for all benzils. The negative ion mass spectra of the CH 3 O‐ and CH 3 S‐substituted compounds also exhibited ions resulting from loss of CH 3 from the parent; Cl − was observed too in the spectra of the chlorine substituted benzils. Only for the nitrobenzils is more than one fragment ion observed in the spectra. A comparison of the negative ion spectra with the positive ion spectra previously reported is also presented and discussed.