Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002apj...577l..71s&link_type=abstract
The Astrophysical Journal, Volume 577, Issue 1, pp. L71-L74.
Astronomy and Astrophysics
Astronomy
6
Ism: Molecules, Line: Identification, Molecular Data, Molecular Processes, Radio Lines: Ism
Scientific paper
Two new silicon-bearing molecules, the closed-shell asymmetric tops cyanosilylene HSiCN and its isomer HSiNC, have been detected in a laboratory discharge by molecular beam Fourier transform microwave spectroscopy. The rotational spectra of the normal and deuterated isotopic species of both molecules have been analyzed to derive precise spectroscopic constants, which allow the astronomically most interesting transitions up to 120 GHz to be calculated to an accuracy better than 1 km s-1 in equivalent radial velocity. Both molecules are good candidates for astronomical detection, closely related in structure and composition to known astronomical molecules, and they are highly polar, with estimated dipole moments of 3.5 D for HSiCN and 2.5 D for HSiNC.
McCarthy Michael C.
Sanz Eugenia M.
Thaddeus Patrick
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