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FT MICROWAVE CHARACTERIZATION OF THE ONION LACHRYMATOR (Z)-PROPANETHIAL S-OXIDE GENERATED BY A FLOW PYROLYSIS

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/13169

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Title: FT MICROWAVE CHARACTERIZATION OF THE ONION LACHRYMATOR (Z)-PROPANETHIAL S-OXIDE GENERATED BY A FLOW PYROLYSIS
Creators: Gillies, J. Z.; Gillies, C. W.; Warner, H. E.; Malloy, R.
Issue Date: 1994
Abstract: The microwave spectra of (Z) Propanethial S-Oxide (ethyl sulfine) isotopomers, $C_{2}H_{5}CHSO$ AND $C_{2}H_{5}CH^{34}SO$, were assigned using pulsed beam FT microwave spectroscopy, Ethyl sulfine, the species responsible for onion tears, has been generated via an on-line pyrolysis in which the precursor, 2-metyl-2-propyl vinyl sulfoxide, was flowed through a furnace coupled directly to the pulsed nozzle. Rotational constants (in MHz) obtained from a fit of {a-} and {b}-type transitions to a Watson Hamiltonian are A=10182.258(3), B=2209.567(1), C=1997.111(1) for the normal species, and A=10113.393(2), B=2181.858(1), and C=1972.327(1) for the sulfur-34 isotope. The isotopic moments of inertia are consistent with a planar C-C-S-O framework in which the oxygen and the ethyl group are syn to each other with respect to the C-S bond. [FIGURE].
URI: http://hdl.handle.net/1811/13169
Other Identifiers: 1994-RF'-03
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