Disulfur monoxide

Structural formula
General
Surname	Disulfur monoxide
other names	Disulfur (I) oxide
Molecular formula	S 2 O
Brief description	colorless gas
External identifiers / databases
PubChem	140772
Wikidata	Q3502614
properties
Molar mass	80.13 g mol −1
Physical state	gaseous
solubility	reacts with water
safety instructions
GHS hazard labeling ; no classification available
GHS hazard labeling ; no classification available
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Disulfur monoxide is a chemical compound from the group of sulfur oxides . The compound was first presented in 1933 by Peter W. Schenk, who however believed the compound to be sulfur monoxide.

Occurrence

Disulfur monoxide has been detected on Jupiter's moon Io.

Extraction and presentation

96% to 100% pure disulfur monoxide can be obtained by reacting thionyl chloride vapor with silver sulfide at 160 ° C.

{\ displaystyle \ mathrm {SOCl_ {2} + Ag_ {2} S \ longrightarrow 2 \ AgCl + S_ {2} O}}

The reaction of sulfur with oxygen or copper (II) oxide does not produce pure disulfur monoxide.

It is also produced when sulfur monoxide decomposes

{\ displaystyle \ mathrm {3 \ SO \ longrightarrow SO_ {2} + S_ {2} O}}

or its reaction with sulfur.

{\ displaystyle \ mathrm {2 \ SO + S_ {2} \ longrightarrow 2 \ S_ {2} O}}

properties

Disulfur monoxide is a colorless gas that reacts with water to form sulfur, hydrogen sulfide and sulfur dioxide . It can only be kept for a few days in the gas phase at pressures less than 1 mbar and polymerises at higher pressures, in solvents or at higher temperatures with elimination of sulfur dioxide to form yellow to orange-colored polysulfur oxides (S _n O) _x . The compound reacts with alkalis and halogens.

{\ displaystyle \ mathrm {S_ {2} O + 2 \ Cl_ {2} \ longrightarrow SOCl_ {2} + SCl_ {2}}}

Individual evidence

↑ ^a ^b ^c ^d ^e A. F. Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 574.
↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
↑ ^a ^b Ralf Steudel : Elemental Sulfur and Sulfur-Rich Compounds II . Springer, 2003, ISBN 3-540-40378-7 , pp. 205 ( limited preview in Google Book search).
↑ Volcanic origin of disulfur monoxide S ₂ O on Io , MY Zolotov, and B. Fegley. Icarus 133 (2): 293-297 (1998).
↑ Peter W. Schenk, Werner Holst: About the sulfur monoxide. XIV. Attempts to make S ₂ O pure. In: Journal for inorganic and general chemistry. 319, 1963, pp. 337-349, doi : 10.1002 / zaac.19633190515 .

[HoWi-1] A. F. Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 574.

[NV-2] This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.

[Ralf_Steudel-3] Ralf Steudel : Elemental Sulfur and Sulfur-Rich Compounds II . Springer, 2003, ISBN 3-540-40378-7 , pp. 205 ( limited preview in Google Book search).

[4] Volcanic origin of disulfur monoxide S ₂ O on Io , MY Zolotov, and B. Fegley. Icarus 133 (2): 293-297 (1998).

[DOI10.1002/zaac.19633190515-5] Peter W. Schenk, Werner Holst: About the sulfur monoxide. XIV. Attempts to make S ₂ O pure. In: Journal for inorganic and general chemistry. 319, 1963, pp. 337-349, doi : 10.1002 / zaac.19633190515 .