University of Illinois Urbana-Champaign

Broadband microwave spectroscopy of trans 3-pentenenitrile and its pyrolysis products

Mishra, Piyush

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1374782.pptx
3746.pdf

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https://hdl.handle.net/2142/104589

Description

Title
Broadband microwave spectroscopy of trans 3-pentenenitrile and its pyrolysis products
Author(s)
Mishra, Piyush
Contributor(s)
  • Zwier, Timothy S.
  • Hays, Brian M.
  • Fritz, Sean
Issue Date
2019-06-19
Keyword(s)
Structure determination
Date of Ingest
  • 2019-07-15T22:17:15Z
  • 2020-01-25T19:29:50Z
Abstract
Titan, a moon of Saturn, has an atmosphere that is similar to prebiotic earth, which is nitrogen rich. Pentenenitriles are of importance as they are potential precursors to hetro-aromatic compounds like pyridine. This talk will describe our broadband microwave studies of \textit{trans} 3-pentenenitrile (\textit{t}-3PN) under jet-cooled conditions. Strong-field coherence breaking (SFCB) was used to selectively modulate the intensities of microwave transitions in a conformer-specific manner, aiding analysis. Two conformers of \textit{t}-3PN were identified and the rotational transitions were assigned. The talk will compare the conformational preferences of 3-pentenenitrile with its isomer, 4-pentenenitrile, previously studied in our laboratory. The studies of \textit{t}-3PN serve as a necessary foundation for subsequent studies of its pyrolysis over the 300K-850K temperature range, using a modified Chen nozzle followed by supersonic expansion. We combined CP-FTMW instrument with vacuum ultraviolet (VUV) time-of-flight mass spectrometry (TOF-MS) to obtain mass-correlated broadband microwave spectra. The temperature dependence of the mass spectra aid in identifying the carriers of new transitions appearing in the microwave spectrum. The thermal decomposition of t-3PN produces a range of products, including those that are both radical and molecular in nature.
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
text
Genre of Resource
Conference Paper / Presentation
Language
eng
Permalink
http://hdl.handle.net/2142/104589
DOI
https://doi.org/10.15278/isms.2019.WI06
Copyright and License Information
Copyright 2019 Piyush Mishra

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Abstracts & Presentations - 2019 International Symposium on Molecular Spectroscopy PRIMARY