Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Fourier transform ion cyclotron resonance mass spectrometry study of mesomeric heterocyclic betainium ions
Autore:
Makinen, M; Vainiotalo, P; Schmidt, A;
Indirizzi:
Univ Joensuu, Dept Chem, FIN-80101 Joensuu, Finland Univ Joensuu JoensuuFinland FIN-80101 Chem, FIN-80101 Joensuu, Finland Emory Univ, Dept Chem, Atlanta, GA 30322 USA Emory Univ Atlanta GA USA 30322 ry Univ, Dept Chem, Atlanta, GA 30322 USA
Titolo Testata:
EUROPEAN JOURNAL OF MASS SPECTROMETRY
fascicolo: 3, volume: 6, anno: 2000,
pagine: 259 - 265
SICI:
1469-0667(2000)6:3<259:FTICRM>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
FAST-ATOM-BOMBARDMENT; ORGANIC SALTS; DERIVATIVES; CATIONS; PHASE;
Keywords:
electrospray; Fourier transform ion cyclotron resonance; collision-induced dissociation; multiply charged ions; heterocyclic ions; mesomeric ions;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Makinen, M Univ Joensuu, Dept Chem, POB 111, FIN-80101 Joensuu, Finland Univ Joensuu POB 111 Joensuu Finland FIN-80101 oensuu, Finland
Citazione:
M. Makinen et al., "Fourier transform ion cyclotron resonance mass spectrometry study of mesomeric heterocyclic betainium ions", EUR J MASS, 6(3), 2000, pp. 259-265

Abstract

Mesomeric heterocyclic betainium ions derived from 4-aminopyrimidine-2,6-bis (pyridinium) salts, were examined in the gas phase by Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) with electrospray ionisation, The purpose of the study was to clarify the general gas-phase properties and reactions of these novel ions. Collision-induced dissociation (CID) was used to investigate fragment ion formation and fragmentation pathways. The ions have an unusual tripolar structure with one negative and two positive charges that are in cross-conjugation within a common -electron system. Resonance stabilisation within the ions makes them relatively unreactive in ion-molecule reactions under the conditions in the FT-ICR cell. CID spectra showed that the charged pyridinium groups are easily lost as neutralpyridine, Otherwise the fragmentation depends on the substituent on the aniline moiety.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/09/20 alle ore 00:36:59