Issue |
EAS Publications Series
Volume 46, 2011
PAHs and the Universe: A Symposium to Celebrate the 25th Anniversary of the PAH Hypothesis
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Page(s) | 441 - 446 | |
DOI | https://doi.org/10.1051/eas/1146045 | |
Published online | 30 March 2011 |
C. Joblin and A.G.G.M. Tielens (eds)
EAS Publications Series, 46 (2011) 441-446
[FePAH]+ complexes and [FexPAHy]+ clusters in the interstellar medium: stability and spectroscopy
1
Université de Toulouse, UPS, LCPQ (Laboratoire de Chimie et
Physique Quantiques), IRSAMC, 118
Route de Narbonne, 31062
Toulouse,
France
2
CNRS, LCPQ, IRSAMC, 31062
Toulouse,
France
3
Université de Toulouse, UPS, Centre d’Étude Spatiale des
Rayonnements (CESR), Observatoire Midi-Pyrénées, 9 AV. Colonel Roche, 31028
Toulouse Cedex 04,
France
4
CNRS, CESR, 31028
Toulouse,
France
The relevance of organometallic complexes in the chemistry of the interstellar medium (ISM) was first suggested in the early 90s. This initial proposal has recently been re-considered in the light of new astronomical data, benefiting from pioneering experimental techniques and theoretical methods. In this article, a review of recent theoretical and experimental results obtained for PAHs coordinated to Fe atoms is presented, focusing on: -(i)- the IR spectra of [FePAH]+ and [Fe(PAH)2]+ complexes, found to be in line with the AIBs, with additional specific features in the far-IR range and -(ii)- the photo-evaporation of [FexPAHy]+ clusters as possible candidates for very small grains releasing PAHs in photodissociation regions. These results call for new astronomical data at high spatial resolution. Studies on larger clusters will require further experimental and theoretical developments.
© EAS, EDP Sciences 2011