Two monomethyl- and four dimethyl-triazolocoumarin isomers were characterized by their electron impact mass spectra and by low-energy collision experiments performed on molecular ions M+. and other fragment ions with an ion-trap mass spectrometer. High-energy collision-activated dissociation measurements were performed on the protonated [M + H]+ and deprotonated [M - H]- molecular ion obtained by fast atom bombardment and M+. species produced by electron impact ionization on a double-focusing, reverse-geometry instrument. The data obtained allowed unequivocal structural identification of all the compounds investigated.

STRUCTURAL CHARACTERIZATION OF ISOMERIC TRIAZOLOCOUMARINS BY HIGH-ENERGY AND LOW-ENERGY COLLISION SPECTROMETRY OF M+., [M+H]+ AND [M-H]- SPECIES

CHILIN, ADRIANA;
1991

Abstract

Two monomethyl- and four dimethyl-triazolocoumarin isomers were characterized by their electron impact mass spectra and by low-energy collision experiments performed on molecular ions M+. and other fragment ions with an ion-trap mass spectrometer. High-energy collision-activated dissociation measurements were performed on the protonated [M + H]+ and deprotonated [M - H]- molecular ion obtained by fast atom bombardment and M+. species produced by electron impact ionization on a double-focusing, reverse-geometry instrument. The data obtained allowed unequivocal structural identification of all the compounds investigated.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/130208
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