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Electron impact studies. CXIV —The occurance of metastable ions for two‐ and multi‐ stage decomposition of negative ions derived from p ‐nitrophenyl carboxylic acids
Author(s) -
Bowie John H.,
Stapleton B. Jane
Publication year - 1977
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.1210120706
Subject(s) - metastability , chemistry , ion , decomposition , carboxylic acid , nitro , medicinal chemistry , organic chemistry , alkyl
Pronounced metastable peaks are observed for the two‐stage decomposition and the multi ‐ stage elimination from p ‐NO 2 C 6 H 4 (CH 2 ) n CO 2 H (n>1). 2 H and 18 O labelling shows that each process involves elimination of atoms from both the nitro and carboxyl groups. A consideration of the spectrum of p ‐nitrophenylcyclohexane‐4‐carboxylic acid leads to the proposition that interaction between the two functional groups is not a necessary prerequisite for the elimination of HO⋅.