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The structure of the [C 2 H 5 O] + ion in the mass spectrum of diethyl ether
Author(s) -
Phillips G. R.,
Russell M. E.,
Solka B. H.
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.1210101002
Subject(s) - protonation , chemistry , ion , acetaldehyde , deuterium , ether , mass spectrum , diethyl ether , polyatomic ion , photochemistry , crystallography , medicinal chemistry , ethanol , organic chemistry , physics , atomic physics
The structure of the [C 2 H 5 O] + ion in the spectrum of diethyl ether was examined by use of deuterated ether, CH 3 CD 2 OCH 2 CH 3 . The results show that, at all electron energies from threshold to 70 eV, the predominant ion is a rearrangement ion, probably protonated acetaldehyde, with very little of the [C 2 H 5 O] + being formed by direct carbon‐oxygen bond cleavage. Appearance potential measurements made on the m / e 45, m / e 46 and m / e 47 ions in the deuterated ether show that the threshold structure of the rearrangement ion is protonated acetaldehyde.