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On the Benzylium/Tropylium Ion Dichotomy: Electronic Absorption Spectra in Neon Matrices
Author(s) -
Nagy Adam,
Fulara Jan,
Garkusha Iryna,
Maier John P.
Publication year - 2011
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201008036
Subject(s) - neon , ion , chemistry , absorption spectroscopy , ultraviolet , photochemistry , absorption (acoustics) , spectral line , dipole , mass spectrum , charge (physics) , atomic physics , physics , organic chemistry , optics , argon , quantum mechanics , astronomy
Benzyl and tropyl in charge : Electronic spectra of mass‐selected benzylium (Bz + ) and tropylium (Tr + ) cations embedded in solid neon are reported for the first time. They reveal a weak (1) 1 B 1 ← ${{{\rm{\tilde {\rm X$ 1 A 1 visible (see picture) and a much stronger (1) 1 A 1 ← ${{{\rm{\tilde {\rm X$ 1 A 1 ultraviolet transition for Bz + ( C 2 v symmetry). The lowest dipole‐allowed 1 A′′ 2 ← ${{{\rm{\tilde {\rm X$ 1 A′ 1 absorption in the ultraviolet region for Tr + ( D 7 h ) is also observed.