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Mass spectrometric studies of selected coumarins and psoralens. I—negative ions

✍ Scribed by Martin Tkaczyk; Alicja M. Zobel; Jeffry B. Plomley; Raymond E. March

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
561 KB
Volume
28
Category
Article
ISSN
1076-5174

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✦ Synopsis

An investigation of the negative-ion chemistry of 13 coumarin and three psoralen compounds is reported. Negativeion chemical ionization was effected using 0-' and OH-as the reagent ions; it was found that 0-' leads preferably to ( M -H + 01-whereas OH-mainly furnishes ( M -HI -. The results of metastable anion fragmentation and collision-induced dissociation of mass-selected anions are presented.

📜 SIMILAR VOLUMES

Negative ion chemical ionization mass sp
Negative ion chemical ionization mass spectrometric studies of tetradentate schiff base coordination compounds. Fluorinecontaining reagent gases
✍ Erwin Baumgartner; John G. Dillard 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 English ⚖ 378 KB

Negative ion mass spectra using chemical ionization conditions have been measured for a series of tetradentate Schiff base coordination compounds of Co(II), Ni(I1) and Cu(I1). Fluorhe-mntaining reagent gases CF,,, SO,F, and SF, have been used. The fonnation of molecular negative ions for the complex