title: Reactivity of the N-methylene-5,8-didehydroisoquinolinium triradical ion.
abstract: The reactivity of a sigma,sigma,pi-triradical, N-methylene-5,8-didehydroisoquinolinium ion, has been compared to that of four related mono- and biradicals in a Fourier transform ion cyclotron resonance mass spectrometer. The triradical contains two weakly interacting orthogonal radical systems-the sigma,sigma-biradical moiety and the pi-monoradical moiety. The sigma,sigma-biradical moiety is found to be substantially more reactive than the pi-radical moiety. The pi-radical site reacts only after reactions have quenched the sigma-radical sites.
authors.affiliation: Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, USA.
authors.forename: Katrina E
authors.initials: KE
authors.lastname: Nizzi
authors.forename: F Sedinam
authors.initials: FS
authors.lastname: Amegayibor
authors.forename: John J
authors.initials: JJ
authors.lastname: Nash
authors.forename: Hilkka I
authors.initials: HI
authors.lastname: Kenttämaa
mesh_terms: D005609:Free Radicals / Q000737:chemistry; D007546:Isoquinolines / Q000737:chemistry*; D007700:Kinetics; D015394:Molecular Structure; D011806:Quinolinium Compounds / Q000737:chemistry*
chemical_list: D005609:Free Radicals; D007546:Isoquinolines; C505703:N-methylene-5,8-didehydroisoquinolinium; D011806:Quinolinium Compounds