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.
|Data di pubblicazione:||2008|
|Titolo:||Effect of protonation and deprotonation on the gas-phase reactivity of fluorinated 1,2,4-triazines|
|Autori:||Giorgi, G.; PALUMBO PICCIONELLO, A.; Pace, A.; Buscemi, S.|
|Tipologia:||Articolo su rivista|
|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.|
|Digital Object Identifier (DOI):||10.1016/j.jasms.2008.01.014|
|Appare nelle tipologie:||01 - Articolo su rivista|