University of Illinois Urbana-Champaign

Detection and characterization of the stannylene (SnH2) radical in the gas phase

Smith, Tony

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853642.pptx

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https://hdl.handle.net/2142/97161

Description

Title
Detection and characterization of the stannylene (SnH2) radical in the gas phase
Author(s)
Smith, Tony
Contributor(s)
Clouthier, Dennis
Issue Date
2017-06-22
Keyword(s)
Radicals
Date of Ingest
  • 2017-07-27T20:15:53Z
  • 2018-01-29T23:05:59Z
Abstract
The electronic spectrum of the jet-cooled SnH$_{2}$ radical has been detected by LIF spectroscopy. The radical was produced in a pulsed electric discharge through a precursor mixture of SnH$_{4}$ in argon. Each band in the LIF spectrum consists of a small number of rovibronic transitions to the lowest energy (K$_{a}$ = 0, J = 0,1,2,3) rotational levels in the excited state. High resolution spectra of the $^{p}$P$_{1}$(1) line of the 2$^{2}$$_{0}$ band show 7 components whose relative intensities are characteristic of the tin major isotopic abundances. The emission spectra are also consistent with assigning the spectrum as due to SnH$_{2}$. The fluorescence lifetimes of the upper state rotational levels decrease with increasing J', indicative of a rotationally dependent predissociation process in the excited state, similar to that previously observed in SiH$_{2}$ and GeH$_{2}$. Fluorescence hole burning experiments have located the upper state K$_{a}$ = 2 levels which allow a determination of the molecular structure.
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
text
Genre of Resource
Conference Paper / Presentation
Language
eng
Permalink
http://hdl.handle.net/2142/97161
DOI
https://doi.org/10.15278/isms.2017.RJ08
Copyright and License Information
Copyright 2017 Tony Smith

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Abstracts & Presentations - 2017 International Symposium on Molecular Spectroscopy PRIMARY