Positive ions and negative ions fab (fast atom bombardment) mass spectrometry of some bisazolium salts
✍ Scribed by Pilar Cabildo; Rosa Claramunt; José Luis Lavandera; Dionisia Sanz; Jose Elguero; Christine Enjalbal; Jean-Louis Aubagnac
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 1997
- Tongue
- English
- Weight
- 429 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0022-152X
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Significant information on the structure of various bisazolium salts of the type CA~2~ (C^++^ 2A^−^) were revealed by the study of the FAB spectra of their positive and negative ions. Thus only one spectrum, whatever it consists of the positive or of the negative ions spectrum, enables the identification of the cation C^++^ and of the anion A^−^. Moreover, the same information are collected from the CAD spectrum of the adduct ion CA^+^ allowing the identification of such a compound in a mixture.
📜 SIMILAR VOLUMES
## Abstract A new technique using negative‐ion fast atom bombardment mass spectrometry for the analysis of xanthates and related compounds is described. Electron impact and positive‐ion fast atom bombardment mass spectrometry produced no structurally related fragment ions or observable molecular io
## Abstract The fragmentation patterns of __N__‐phosphoamino acids in negative‐ion fast atom bombardment mass spectrometry (FABMS) showed different characteristics to those in positive‐ion FABMS. Six typical __N__‐diisopropyloxyphorphorylamino acids all had intense [M − 1]^−^ peaks, and they underw
## Abstract The negative‐ion collisionally induced dissociation fast atom bombardment mass spectra of sodium salts of monensins A and B, their 3‐__O__‐demethyl derivatives, laidlomycin and 26‐deoxylaidlomycin are reported. The nature of the R^3^ substituent appears to be important for the formation