Centimeter-wave Spectroscopy Of Several New Silicon-bearing Carbon Chains
McCarthy, Michael C.
Loading…
Permalink
https://hdl.handle.net/2142/116650
Description
Title
Centimeter-wave Spectroscopy Of Several New Silicon-bearing Carbon Chains
Author(s)
McCarthy, Michael C.
Contributor(s)
Carroll, Brandon
Changala, Bryan
Issue Date
2022-06-21
Keyword(s)
Rotational structure/frequencies
Abstract
The rotational spectra of several new silicon-bearing carbon chains were detected by means of Fourier-transform microwave spectroscopy in a supersonic jet source equipped with an electrical discharge. The newly detected species are HSiCCH, H$_2$C$_3$Si, and the SiC$_5$H radical. Precise rotational constants have been determined for all three, and as have fine and hyperfine constants for SiC$_5$H. Using samples enriched in carbon-13 and D, it has also been possible to detect several rare isotopic species and in turn derive an experimental structure for HSiCCH. Isotopic spectroscopy also provides clues as to the formation pathways that may be operative in our discharge. Finally, because these chains are both polar and closely related in structure and composition to other small Si-bearing chains and rings that have been detected in the circumstellar envelope of the evolved carbon star IRC+10216, they may be of astronomical interest.
Use this login method if you
don't
have an
@illinois.edu
email address.
(Oops, I do have one)
IDEALS migrated to a new platform on June 23, 2022. If you created
your account prior to this date, you will have to reset your password
using the forgot-password link below.
