Mathematics – Logic
Scientific paper
May 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003dps....35.0502h&link_type=abstract
American Astronomical Society, DPS meeting #35, #05.02; Bulletin of the American Astronomical Society, Vol. 35, p.917
Mathematics
Logic
1
Scientific paper
The nitrogen-methane haze of Titan is known to harbor at least four molecules containing a nitrile (-CN) group: H-CN, NC-CN, CH3-CN, and HCC-CN. The low-temperature reaction chemistry of these molecules is of interest as the Cassini orbiter and Huygens probe approach the Saturnian system. As part of our preparation for Cassini-Huygens results we have undertaken an experimental study of the dominant chemical changes of nitrile molecules. Our results point to isomerization products formed by both low-temperature photochemistry and radiation chemistry. Among the new molecules we can predict are isonitriles (e.g. CH3-NC) and enimines (e.g. H2C=C=NH). We also expect, depending on the amount of H2O present, that cyanate ions (OCN-) can form on Titan. This presentation will include our latest results for Titan nitriles, as well a few nitriles not yet detected on Titan but present in either cometary comae or the interstellar medium. Since nitriles can form biological molecules, such as alpha-amino acids, purines, and pyrimidines, our results may also have astrobiological implications. -- The authors acknowledge NASA funding through the SARA and Planetary Atmospheres programs. RLH acknowledges support from NASA grant NAG-5-1843.
Hudson Reggie L.
Moore Marla H.
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