IR spectra of resorcinol + –Ar n cluster cations ( n = 1, 2): Evidence for photoionization-induced π → H isomerization
Chemical Physics Letters, ISSN: 0009-2614, Vol: 474, Issue: 1, Page: 7-12
2009
- 17Citations
- 5Captures
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Article Description
Resorcinol + –Ar n cations (Rs + –Ar n, n = 1,2) generated by resonant multiphoton ionization (REMPI) and electron ionization (EI) were assayed by their infrared (IR) photodissociation spectra in the OH stretch ( ν OH ) range. Several isomers distinguished by their Ar ligand binding sites and their Rs + isomeric cores are identified by characteristic Δ ν OH complexation shifts. Neutral Rs–Ar n complexes prefer intermolecular π-bonding of Ar to the aromatic ring, whereas cationic Rs + –Ar n clusters show predominant H-bonding to the acidic OH groups. The REMPI-IR spectra of Rs + –Ar 2 reveal ν OH absorptions assigned to cold π-bound complexes and hot H-bound complexes. The latter are generated via ionization-induced intermolecular π → H isomerization.
Bibliographic Details
Elsevier BV
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