Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007apj...662.1309t&link_type=abstract
The Astrophysical Journal, Volume 662, Issue 2, pp. 1309-1314.
Astronomy and Astrophysics
Astronomy
8
Astrochemistry, Ism: Molecules, Molecular Data
Scientific paper
Pure rotational spectra of four small polycyclic aromatic hydrocarbons have been observed by Fourier transform microwave spectroscopy of a molecular beam in the frequency range from 7 to 37 GHz. Initial searches for acenaphthene (C12H10), acenaphthylene (C12H8), and fluorene (C13H10) were guided by quantum chemical calculations performed at the B3LYP/cc-pVTZ level of theory. All three molecules exhibit b-type rotational spectra and are calculated to be moderately polar, with dipole moments of 0.3-0.9 D. Close agreement (to better than 1%) between the calculated equilibrium and experimentally derived ground-state rotational constants is achieved. Selected transitions of acenaphthene and fluorene have also been measured in the 3 mm region by conventional free-space absorption spectroscopy, as have transitions of the previously studied azulene (C10H8). The data presented here facilitate deep radio astronomical searches with large radio telescopes.
Gottlieb Carl A.
McCarthy Mary C.
Thaddeus Patrick
Theule Patrice
Thorwirth Sven
No associations
LandOfFree
Rotational Spectra of Small PAHs: Acenaphthene, Acenaphthylene, Azulene, and Fluorene does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Rotational Spectra of Small PAHs: Acenaphthene, Acenaphthylene, Azulene, and Fluorene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotational Spectra of Small PAHs: Acenaphthene, Acenaphthylene, Azulene, and Fluorene will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1419236