University of Illinois Urbana-Champaign

Laser spectroscopic detection of the jet-cooled SnCH2 molecule

Smith, Tony

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1127791.pptx
3073.pdf

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https://hdl.handle.net/2142/100847

Description

Title
Laser spectroscopic detection of the jet-cooled SnCH2 molecule
Author(s)
Smith, Tony
Contributor(s)
  • Clouthier, Dennis
  • Gharaibeh, Mohammed
Issue Date
2018-06-20
Keyword(s)
Radicals
Date of Ingest
  • 2018-08-17T16:09:54Z
  • 2018-12-12T22:35:11Z
Abstract
The stannylidene (SnCH2) molecule has been detected for the first time in the gas phase by supersonic expansion/laser spectroscopy. This transient molecule was produced in an electric discharge through a dilute mixture of tetramethyltin [(CH3)4Sn] in high-pressure argon and studied by laser induced and dispersed fluorescence through the B˜ 1B2 - X˜ 1A1 transition. The vibronic energy levels of the ground and excited states have been measured for both SnCH2 and SnCD2. The observed vibrational frequencies, partially resolved rotational band contours, deuterium isotope shifts, and electronic excitation energies are in accord with our predictions from ab initio calculations. This novel species has an unusual tincarbon double bond in the ground state. It is the third in the series of X=CH2 (X = Si, Ge and Sn) group IVA vinylidene species we have been able to produce and study in the gas phase.
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
text
Genre of Resource
Conference Paper / Presentation
Language
eng
Permalink
http://hdl.handle.net/2142/100847
DOI
10.15278/isms.2018.WD06
Copyright and License Information
Copyright 2018 Tony Smith

Owning Collections

Abstracts & Presentations - 2018 International Symposium on Molecular Spectroscopy PRIMARY