𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Energy-dependent dissociation of benzylpyridinium ions in an ion-trap mass spectrometer

✍ Scribed by Emilie-Laure Zins; Claude Pepe; Detlef Schröder

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
262 KB
Volume
45
Category
Article
ISSN
1076-5174

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Benzylpyridinium ions, generated via electrospray ionization of dilute solutions of their salts in acetonitrile/water, are probed by collisional activation in an ion‐trap mass spectrometer. From the breakdown diagrams obtained, phenomenological appearance energies of the fragment ions are derived. Comparison of the appearance energies with calculated reaction endothermicities shows a reasonably good correlation for this particular class of compounds. In addition, the data indirectly indicate that at threshold the dissociation of almost all of the benzylpyridinium ions under study leads to the corresponding benzylium ions, rather than the tropylium isomers. Substituent effects on the fragmentation for a series of benzylpyridinium ions demonstrate that neither mass effects nor differences in density of states seriously affect the energetics derived from the ion‐trap experiments. Copyright © 2010 John Wiley & Sons, Ltd.

📜 SIMILAR VOLUMES

Observation of self-ion–molecule reactio
Observation of self-ion–molecule reactions during collisionally activated dissociation in an ion-trap mass spectrometer
✍ Hui-Fen Wu; Chien-Hung Chen; Meng-Ting Wu 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 102 KB

## Abstract This paper describes the formation of protonated molecules ([M + H]^+^) and adduct ions by self‐ion–molecule reactions (SIMR) during collisionally activated decomposition (CAD) of methyne addition ions ([M + CH]^+^) produced from chemical ionization (CI) or SIMR in both an external and

Tandem mass spectrometric collision-indu
Tandem mass spectrometric collision-induced dissociation study ofs-triazines in an ion trap mass spectrometer
✍ Vincze, Adam; Yinon, Jehuda 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 413 KB 👁 2 views

The collision-induced dissociation, (CID) mass spectra of 11 common s-triazine herbicides were investigated using gas chromatography/tandem mass spectrometry on an ion trap mass spectrometer with a temperatureprogrammable injector. The precursor ions of the CID mass spectra studied included both the

Anionic copper complex fragmentations fr
Anionic copper complex fragmentations from enkephalins under low-energy collision-induced dissociation in an ion trap mass spectrometer
✍ Anne Bossée; Carlos Afonso; Françoise Fournier; Olivier Tasseau; Claude Pepe; Br 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 216 KB

## Abstract Peptide metallation with Cu^2+^ was explored in the negative ESI mode using an ion trap mass spectrometer. Under these conditions, the [(M − 3H) + Cu^II^]^−^ species formed were investigated under low‐energy collision‐induced dissociation conditions. MS2 experiments indicate a very diff

Low-energy ionization of hydrocarbons in
Low-energy ionization of hydrocarbons in the quadrupole ion trap mass spectrometer
✍ Stilianos G. Roussis; W. Patrick Fitzgerald; Andrew S. Cameron 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 274 KB 👁 2 views

The capabilities of a commercial ion trap mass spectrometer to readily perform chemical ionization experiments have been exploited to account for the restrictions of the instrument to perform low-energy ($10 eV) electron ionization (EI) experiments. CS 2 and benzene have been used as representative

Electrospray ionization tandem mass spec
Electrospray ionization tandem mass spectrometry collision-induced dissociation study of explosives in an ion trap mass spectrometer
✍ Jehuda Yinon; Joseph E. McClellan; Richard A. Yost 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 225 KB 👁 2 views

## Electrospray ionization (ESI) tandem mass spectrometry collision-induced dissociation (CID) fragmentation processes of a series of nitroaromatic, nitramine and nitrate ester explosives were studied in the negative-ion mode using daughter-ion, parent-ion and neutral loss scans. 2,4,6-Trinitrotolu