Pitfalls in the Photoelectron Spectroscopic Investigations of Benzyne. Photoelectron Spectrum of Cyclopentadienylideneketene

Anna Chrostowska; Genevieve Pfister-Guillouzo; Françoise Gracian; Curt Wentrup

doi:10.1071/CH09641

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Pitfalls in the Photoelectron Spectroscopic Investigations of Benzyne. Photoelectron Spectrum of Cyclopentadienylideneketene

Anna Chrostowska ^A ^C , Genevieve Pfister-Guillouzo ^A , Françoise Gracian ^A and Curt Wentrup ^B ^C

+ Author Affiliations

- Author Affiliations

^A Equipe de Chimie Physique, Institut Pluridisciplinaire de Recherche sur l’Environnement et les Matériaux, UMR CRNS 5254, Université de Pau et les Pays de l’Adour, 6400 Pau, France.

^B School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Qld 4072, Australia.

^C Corresponding authors. Email: anna.chrostowska@univ-pau.fr; wentrup@uq.edu.au

Australian Journal of Chemistry 63(7) 1084-1090 https://doi.org/10.1071/CH09641
Submitted: 9 December 2009 Accepted: 20 April 2010 Published: 15 July 2010

Abstract

The 9.24 eV ionization energy often quoted in photoelectron spectroscopic investigations of benzyne is not due to benzyne 1 but to benzene, C₆H_6. The 8.9 eV ionization is not due to benzyne either but to cyclopentadienylideneketene 12 when a 10.2 eV band is also present, or to biphenylene 5 when a 7.6 eV band is simultaneously present. Cyclopentadienylideneketene 12 has been generated by flash vacuum thermolysis of four different precursors, which permit a linking of infrared, mass, and photoelectron spectroscopic observations.

Acknowledgement

This work was supported by the Australian Research Council and by the CNRS.

References

Pitfalls in the Photoelectron Spectroscopic Investigations of Benzyne. Photoelectron Spectrum of Cyclopentadienylideneketene

Abstract

Acknowledgement

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