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EnglishPositive and negative electrospray mass spectrometry (MS), in-time and in-space MS" experiments, high-resolution and accurate mass measurements obtained with an Orbitrap, together with density functional theory calculations have been used to study the gas-phase ion chemistry of a series of fluorinated 1,2,4-triazines. As a result of low-energy collision-induced dissociations, occurring in an ion trap and in a triple quadrupole, their protonated and deprotonated molecules show interesting features depending on the nature and structure of the precursor ions. The occurrence of elimination /hydration reactions produced by positive ions in the ion trap is noteworthy. Decompositions of deprotonated molecules, initiated by elimination of a hydroxyl radical from [M-H](-), are dominated by radical anions. Theoretical calculations have allowed us to obtain information on atom sites involved in the protonation and deprotonation reactions.
Giorgi, G., PALUMBO PICCIONELLO, A., Pace, A., & Buscemi, S. (2008). Effect of protonation and deprotonation on the gas-phase reactivity of fluorinated 1,2,4-triazines. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY, 19, 689-694.
| Data di pubblicazione: | 2008 |
| Titolo: | Effect of protonation and deprotonation on the gas-phase reactivity of fluorinated 1,2,4-triazines |
| Autori: | |
| Citazione: | Giorgi, G., PALUMBO PICCIONELLO, A., Pace, A., & Buscemi, S. (2008). Effect of protonation and deprotonation on the gas-phase reactivity of fluorinated 1,2,4-triazines. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY, 19, 689-694. |
| Rivista: | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.jasms.2008.01.014 |
| Abstract: | Positive and negative electrospray mass spectrometry (MS), in-time and in-space MS" experiments, high-resolution and accurate mass measurements obtained with an Orbitrap, together with density functional theory calculations have been used to study the gas-phase ion chemistry of a series of fluorinated 1,2,4-triazines. As a result of low-energy collision-induced dissociations, occurring in an ion trap and in a triple quadrupole, their protonated and deprotonated molecules show interesting features depending on the nature and structure of the precursor ions. The occurrence of elimination /hydration reactions produced by positive ions in the ion trap is noteworthy. Decompositions of deprotonated molecules, initiated by elimination of a hydroxyl radical from [M-H](-), are dominated by radical anions. Theoretical calculations have allowed us to obtain information on atom sites involved in the protonation and deprotonation reactions. |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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