info:eu-repo/semantics/article
Tautomerism and electronic spectroscopy of protonated 1- and 2-aminonaphthalene
Fecha
2018-02Registro en:
Noble, Jennifer A.; Broquier, Michel; Grégoire, Gilles; Soorkia, Satchin; Pino, Gustavo Ariel; et al.; Tautomerism and electronic spectroscopy of protonated 1- and 2-aminonaphthalene; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 20; 9; 2-2018; 6134-6145
1463-9076
1463-9084
CONICET Digital
CONICET
Autor
Noble, Jennifer A.
Broquier, Michel
Grégoire, Gilles
Soorkia, Satchin
Pino, Gustavo Ariel
Marceca, Ernesto José
Dedonder-Lardeux, Claude
Jouvet, Christophe
Resumen
Experimental and theoretical investigations of the excited states of protonated 1- and 2-aminonaphthalene are presented. The electronic spectra are obtained by laser induced photofragmentation of the ions captured in a cold ion trap. Using ab initio calculations, the electronic spectra can be assigned to different tautomers which have the proton on the amino group or on the naphthalene moiety. It is shown that the tautomer distribution can be varied by changing the electrospray source conditions, favoring either the most stable form in solution (amino protonation) or that in the gas phase (aromatic ring protonation). Calculations for larger amino-polyaromatics predict that these systems should behave as "proton sponges" i.e. have a proton affinity larger than 11 eV.