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On photolytic synthesis of sulphur-bearing organic molecules by reacting S or S2 with the hydrogen end-capped polyyne C10H2

Published online by Cambridge University Press:  10 August 2007

Dieter Heymann
Dieter Heymann
Affiliation:
Departments of Chemistry and Earth Science, Mails Stop 126, Rice University, Houston, TX 77251-1892, USA e-mail: [email protected]
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Abstract

The photolysis of dilute solutions of octacyclosulphur or hexacyclosulphur in n-hexane with 253.6 nm UV radiation produces S and possibly S2. The ‘ring-opening’ yields of these sulphur molecules range from 0.2 to 0.7. When the hydrogen end-capped polyyne C10H2 is irradiated in n-hexane, it transforms into unidentified products with a quantum yield of 3×10−5. When octacyclosulphur is added to the solution, the yield rises to 7×10−3. The putative sulphur-bearing product(s) could not be identified. It is suggested that sulphur-bearing molecules might be formed in astronomical settings by reactions of carbon molecules having triple or double C—C bonds with photolytically produced S and/or S2.

Keywords

astrobiological synthesisC10H2hexacyclosulphuroctacyclosulphurphotolysissulphur-bearing organic molecules
Type
Research Article
Information
International Journal of Astrobiology , Volume 6 , Issue 3 , July 2007 , pp. 217 - 221
Copyright
Copyright © Cambridge University Press 2007

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