Disulfur monoxide: Difference between revisions
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It is the base oxide for [[thiosulfurous acid]].<ref>{{cite book|title=Objective Chemistry For Iit Entrance|author=Alok Mittal|page=13|url=http://books.google.com.au/books?id=SzN1oCapakAC}}</ref> |
It is the base oxide for [[thiosulfurous acid]].<ref>{{cite book|title=Objective Chemistry For Iit Entrance|author=Alok Mittal|page=13|url=http://books.google.com.au/books?id=SzN1oCapakAC}}</ref> |
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==Discovery== |
==Discovery== |
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The gas was first produced by P. W. Schenk in 1933 with a glow discharge though sulfur vapour and sulfur dioxide. He discovered that the gas could survive for hours at single digit pressures of mercury in clean glass, but decomposed when the pressure went up to 30mm of mercury. However he believed that the formula was SO and called it [[sulfur monoxide]]. In 1940 K Kondrat'eva and V Kondrat'ev became convinced that the formula was S<sub>2</sub>O<sub>2</sub>, [[disulfur dioxide]]. However all were wrong until in 1956, David J. Meschi and Rollie J. Myers proved the formula was S<sub>2</sub>O.<ref>{{cite journal|journal=Journal of the American Chemical |
The gas was first produced by P. W. Schenk in 1933 with a glow discharge though sulfur vapour and sulfur dioxide. He discovered that the gas could survive for hours at single digit pressures of mercury in clean glass, but decomposed when the pressure went up to 30mm of mercury. However he believed that the formula was SO and called it [[sulfur monoxide]]. In 1940 K Kondrat'eva and V Kondrat'ev became convinced that the formula was S<sub>2</sub>O<sub>2</sub>, [[disulfur dioxide]]. However all were wrong until in 1956, David J. Meschi and Rollie J. Myers proved the formula was S<sub>2</sub>O.<ref>{{cite journal|journal=Journal of the American Chemical Society|title=Disulfur Monoxide. I. Its Identification as the Major Constituent in Schenk's “Sulfur Monoxide”|author=David J. Meschi and Rollie J. Myers|date=30 July 1956|volume=78|issue=24|page=6220|doi=10.1021/ja01605a002|url=http://pubs.acs.org/doi/abs/10.1021/ja01605a002}}</ref> |
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==Natural occurrence== |
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[[Desulfovibrio desulfuricans]] is claimed to produce S<sub>2</sub>O.<ref>{{cite journal|title=Disulfur monoxide: production by Desulfovibrio|journal=Science|date=26 May 1967|volume=156|issue=3778|pmid= 6024190}}</ref> |
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S<sub>2</sub>O can be found coming from volcanoes on [[IO]]. |
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==Reactions== |
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A self decomposition can from trithio-ozone S<sub>3</sub> and S<sub>2</sub>O. Also 5,6-di-tert-butyl-2,3,7-trithiabicyclo[2.2.1]hept-5-ene 2-endo-7-endo-dioxide when heated can form S<sub>2</sub>O.<ref>{{cite journal|title=Reversible disulfur monoxide (S2O)-forming retro-Diels-Alder reaction. disproportionation of S2O to trithio-ozone (S3) and sulfur dioxide (SO2) and reactivities of S2O and S3|author=Nakayama J|journal=Journal of the American Chemical Societ|date=28 July 2004|volume=126|issue=29|page=9085|pmid=15264842|url=http://www.ncbi.nlm.nih.gov/pubmed/15264842}}</ref> It reacts with diazoalkanes for form dithiirane 1-oxides.<ref>{{cite journal|title=A Convenient Method for the Generation of a Disulfur Monoxide Equivalent and Its Reaction with Diazoalkanes to Yield Dithiirane 1-Oxides|author=A Ishii|journal=Angew Chem Int Ed Engl|date=18 May 2001|volume=40|issue=10|url=http://www.ncbi.nlm.nih.gov/pubmed/11385674|pmid=11385674}}</ref> |
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==References== |
==References== |
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Revision as of 09:48, 2 October 2010
Disulfur monoxide or sulfur suboxide is an unstable gas being a compound of sulfur and oxygen with formula S2O. It is one of the lower sulfur oxides. It is a colourless gas. It can be formed by reacting thionyl chloride with Silver sulfide:
- SOCl2 + Ag2S → AgCl + S2O.
This is done under low pressure and high temperature.[1] Another way to form it is via a glow discharge in sulfur dioxide.[2] The arrangement of atoms is SSO in a bent form. The angle formed at the central sulfur atom is 117.88°. The sulfur to sulfur bond length is 188.4pm, and the length of the oxygen bond is 188.4pm.[3] It can form an orange red condensate at liquid nitrogen temperatures. On decomposition at room temperature it forms SO2 and a polymeric sulfur oxide.[2]
It is the base oxide for thiosulfurous acid.[4]
Discovery
The gas was first produced by P. W. Schenk in 1933 with a glow discharge though sulfur vapour and sulfur dioxide. He discovered that the gas could survive for hours at single digit pressures of mercury in clean glass, but decomposed when the pressure went up to 30mm of mercury. However he believed that the formula was SO and called it sulfur monoxide. In 1940 K Kondrat'eva and V Kondrat'ev became convinced that the formula was S2O2, disulfur dioxide. However all were wrong until in 1956, David J. Meschi and Rollie J. Myers proved the formula was S2O.[5]
Natural occurrence
Desulfovibrio desulfuricans is claimed to produce S2O.[6] S2O can be found coming from volcanoes on IO.
Reactions
A self decomposition can from trithio-ozone S3 and S2O. Also 5,6-di-tert-butyl-2,3,7-trithiabicyclo[2.2.1]hept-5-ene 2-endo-7-endo-dioxide when heated can form S2O.[7] It reacts with diazoalkanes for form dithiirane 1-oxides.[8]
References
- ^ "Sulfur Halides". doi:10.1002/14356007.a25_623.
- ^ a b Cotton and Wilkinson (1966). Advanced Inorganic Chemistry A Comprehensive Treatise. p. 540.
- ^ Meschi, D.J. (1959). "The microwave spectrum, structure, and dipole moment of disulfur monoxide". Journal of Molecular Spectroscopy. 3 (1–6): 405–416. doi:10.1016/0022-2852(59)90036-0.
{{cite journal}}: Cite has empty unknown parameters:|laysource=,|laydate=,|month=,|laysummary=, and|quotes=(help); Unknown parameter|coauthors=ignored (|author=suggested) (help) - ^ Alok Mittal. Objective Chemistry For Iit Entrance. p. 13.
- ^ David J. Meschi and Rollie J. Myers (30 July 1956). "Disulfur Monoxide. I. Its Identification as the Major Constituent in Schenk's "Sulfur Monoxide"". Journal of the American Chemical Society. 78 (24): 6220. doi:10.1021/ja01605a002.
- ^ "Disulfur monoxide: production by Desulfovibrio". Science. 156 (3778). 26 May 1967. PMID 6024190.
- ^ Nakayama J (28 July 2004). "Reversible disulfur monoxide (S2O)-forming retro-Diels-Alder reaction. disproportionation of S2O to trithio-ozone (S3) and sulfur dioxide (SO2) and reactivities of S2O and S3". Journal of the American Chemical Societ. 126 (29): 9085. PMID 15264842.
- ^ A Ishii (18 May 2001). "A Convenient Method for the Generation of a Disulfur Monoxide Equivalent and Its Reaction with Diazoalkanes to Yield Dithiirane 1-Oxides". Angew Chem Int Ed Engl. 40 (10). PMID 11385674.