Centimeter-wave Spectroscopy Of Several New Silicon-bearing Carbon Chains

McCarthy, Michael C.

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https://hdl.handle.net/2142/116650 Copy

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.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Genre of Resource

Conference Paper / Presentation

Language

eng

Handle URL

https://hdl.handle.net/2142/116650

DOI

https://doi.org/10.15278/isms.2022.TD10

Copyright and License Information

Copyright 2022 held by the authors

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