ISSN:
0030-493X
Schlagwort(e):
Chemistry
;
Analytical Chemistry and Spectroscopy
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
Analyses of a series of nitroaromatic compounds using fast atom bombardment (FAB) mass spectrometry are discussed. An interesting ion-molecule reaction leading to [M + O - H]- ions is observed in the negative ion FAB spectra. Evidence from linked-scan and collision-induced dissociation spectra proved that [M + O - H]- ions are produced by the following reaction: M + NO2- → [M + NO2]- → [M + O - H]-. These experiments also showed that M-· ions are produced in part by the exchange of an electron between M and NO2- species. All samples showed M-·, [M - H]- or both ions in their negative ion FAB spectra. Not all analytes studied showed either [M + H]+ and/or M+· in the positive ion FAB spectra. No M+· ions were observed for ions having ionization energies above ∼9 eV.
Zusätzliches Material:
2 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/oms.1210231002
Permalink