Y. Ono, T. Makita, K. Kodera
Aug 1, 1968
Citations
0
Influential Citations
6
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
The mass spectra of DCOOD, DCOOH, CD3COOD, CD3COOH, CH3COOD, C2H5COOD, and C3H7COOD are compared with spectra of the H-containing compounds. Besides, the 18O-labeled acetic acid is measured. The labeling helps to determine the origin of a number of fragment ions. It is found that the two fragment ions C3H5O2+ and C4H7O2+ are produced by the removal of the hydrogen atom from the alkyl group and have the structures of C2H4CO2H+ and C3H6CO2H+ respectively. Neither CH2CO2H+ nor CH3CO2+ is produced. The rerrangement ion CH3O+ is found to have the structure of CH2OH+, one of whose hydrogen atoms comes from the carboxyl group. The origins of the hydrogen atom and the oxygen atom in the other rearrangement ions are also determined. The mechanisms for the fragmentation of the molecular ions are discussed.