PIRENEA Archives - Astrobiology

Top row: molecular structures of 1,4-, 1,5-, and 2,3-dimethylnaphthalene cations (1,4-, 1,5, and 2,3-diMeNp.+). Bottom row: molecular structures of the three expected longlived isomers of C11H9+ cations: benzyltropylium (BzTr+ ), 1-, and 2-naphthylmethylium (1- and 2-NpCH2+ ). -- astro-ph.GA

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Acenaphthene Derivatives As Signatures Of C11H9 Reactivity With Methylated Naphthalenes

by Keith CowingJune 4, 2026June 4, 2026

C11H+9 ion is the dominant fragment cation formed from methyl-naphthalene (MeNp) and dimethyl-naphthalene (diMeNp).