IR Spectrum of the Ethyl Cation: Evidence for the Nonclassical Structure

Andrei, Horia‐Sorin; Solcà, Nicola; Dopfer, Otto

doi:10.1002/anie.200704163

Angewandte Chemie International Edition

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IR Spectrum of the Ethyl Cation: Evidence for the Nonclassical Structure^†

Authors

Horia-Sorin Andrei Dipl.-Phys.,
1. Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany, Fax: (+49) 30-3142-3018
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Nicola Solcà Dr.,
1. Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany, Fax: (+49) 30-3142-3018
2. Current address: Laboratorio Cantonale, Via Mirasole 22, 6500 Bellinzona, Switzerland
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Otto Dopfer Prof. Dr.
- E-mail address: dopfer@physik.tu-berlin.de
1. Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany, Fax: (+49) 30-3142-3018
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First published: 14 November 2007Full publication history
DOI: 10.1002/anie.200704163View/save citation
Cited by: 34 articlesRefresh citation count Citing literature
Funding Information

^†
This study was supported by the Deutsche Forschungsgemeinschaft (DO 729/2) and the Fonds der Chemischen Industrie.

Abstract

Argon tagging allowed the IR spectrum of the ethyl cation C₂H₅⁺ to be inferred by resonant IR photodissociation spectroscopy of weakly bound C₂H₅⁺⋅Ar complexes (see picture). The experimental spectrum closely resembles the theoretical spectra of 1 and 1⋅Ar but shows large deviations from the spectrum predicted for 2, and thus it provides the first direct spectroscopic evidence for the nonclassical structure 1 of protonated ethene.

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