Show simple item record

dc.creatorGillies, C. W.en_US
dc.creatorGillies, J. Z.en_US
dc.creatorCotter, E. A.en_US
dc.creatorWehle, D. M.en_US
dc.date.accessioned2007-11-20T17:10:17Z
dc.date.available2007-11-20T17:10:17Z
dc.date.issued1995en_US
dc.identifier1995-RI-14en_US
dc.identifier.urihttp://hdl.handle.net/1811/29684
dc.description1. J. Z. Gillies, C. W. Gillies, H. E. Warner and R. Malloy, 49th Int. Sym. Mol. Spectros., RF3, 1994, Columbus, Ohio.en_US
dc.descriptionAuthor Institution: Rensselaer Polytechnic Institute, Troy, NY 12180.; Siena College, Loudonville, NY 12211.en_US
dc.description.abstractPulsed beam Fourier transform microwave spectroscopy has been used to characterize the Z form of ethyl sulfine, $CH_{3}CH_{2}CH=SO,$ the compound from cut onions which causes the formation of $tears.^{1}$ This unstable species was produced and its microwave spectrum investigated by carrying the precursor, 2-methyl-2-propyl vinyl sulfoxide, in an argon flow through a furnace coupled to a pulsed nozzle. Using the same flow conditions, a previously unknown microwave spectrum was observed and found to arise from a second geometrical isomer of ethyl sulfine, (E)-propanethial S-oxide. A fit of the measured a-type rotational transitions to a Watson Hamiltonian gives the rotational constants A = 16133(76) MHz, B = 1823.6187(7) MHz and C = 1785.7218(7) MHz. The microwave spectrum of the E-isomer is approximately a factor of two more intense than the $^{13}C$ isotopomers of Z ethyl sulfine which means the pyrolysis produces the E-and Z-isomers of ethyl sulfine in a ratio of 2/98. Internal rotation of the ethyl group about the C-C bond in both geometrical isomers permits rotational isomerism. The E-isomer, like the Z-isomer reported $previously,^{1}$ has a skew conformation.en_US
dc.format.extent73408 bytes
dc.format.mimetypeimage/jpeg
dc.language.isoEnglishen_US
dc.publisherOhio State Universityen_US
dc.titleMICROWAVE IDENTIFICATION OF A SECOND GEOMETRICAL ISOMER OF THE ONION LACHRYMATOR, (E) - PROPANETHIAL S-OXIDEen_US
dc.typearticleen_US


Files in this item

Thumbnail

Items in Knowledge Bank are protected by copyright, with all rights reserved, unless otherwise indicated.

This item appears in the following Collection(s)

Show simple item record