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Electron impact studies. CV —negative ion mass spectra of functional groups. The trimethylsilyl group. Singly charghed and doubly charged ions
Author(s) -
Bowie John H.,
Hale Barbara A.
Publication year - 1976
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.1210111103
Subject(s) - trimethylsilyl , mass spectrum , fragmentation (computing) , ion , chemistry , electron ionization , spectral line , polyatomic ion , medicinal chemistry , group (periodic table) , mass spectrometry , stereochemistry , organic chemistry , ionization , chromatography , physics , astronomy , computer science , operating system
The 70 eV negative ion spectra of m‐ and p‐nitrophenyltrimethylsilyl‐ethers and ‐esters show pronounced molecular anions and simple fragmentation patterns. The spectra of the corresponding ortho isomers show peaks produced by rearrangement processes; these reactions have been studied by 2 H and 18 O labelling. p‐Nitrobenzoyl derivatives of amino trimethylsilyl esters are of limited use for characterization of amino acids. Certain of the compounds studied produce a variety of dianions.