Electronic transitions of protonated benzene and fulvene, and of C6H7 isomers in neon matrices

Iryna Garkusha; Jan Fulara; Adam Nagy; John P Maier

doi:10.1021/ja106470x

Electronic transitions of protonated benzene and fulvene, and of C6H7 isomers in neon matrices

J Am Chem Soc. 2010 Oct 27;132(42):14979-85. doi: 10.1021/ja106470x.

Authors

Iryna Garkusha¹, Jan Fulara, Adam Nagy, John P Maier

Affiliation

¹ Department of Chemistry, University of Basel, Klingelbergstrasse 80, CH-4056 Basel, Switzerland.

PMID: 20919714
DOI: 10.1021/ja106470x

Abstract

Electronic transitions of protonated benzene (Ã (1)B(2)←X̃ (1)A(1), origin at 325 nm) and α-protonated fulvene (Ã (1)A'←X̃ (1)A', at 335 nm) trapped in 6 K neon matrices have been detected. The cations were produced from several different precursors, mass-selected, and co-deposited with neon. After neutralization of the cations, the electronic transitions of cyclohexadienyl (onsets at 549 and 310 nm) and α-hydrogenated fulvene (532 and 326 nm) radicals were identified. Upon excitation of cyclohexadienyl to the B̃ (2)B(1) state, photoisomerization to an open-chain structure and α-hydrogenated fulvene was observed.