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 Sulfur, S Bromine, Br | |
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| Names | |
|---|---|
| IUPAC name
Dibromodisulfane
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| Other names
Bromosulfanyl thiohypobromite
Disulfur dibromide | |
| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.032.821 
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| EC Number |
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PubChem CID
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| UNII | |
CompTox Dashboard (EPA)
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| Properties | |
| S2Br2 | |
| Molar mass | 223.93 g·mol |
| Appearance | Orange/yellow liquid |
| Density | 2.703 g/cm |
| Boiling point | 46–48 °C (115–118 °F; 319–321 K) (0.1 mmHg) |
| Structure | |
| C2 | |
| 2 at sulfur atoms | |
| gauche | |
| Thermochemistry | |
Std molar
entropy (S298) |
350.52 J/(mol·K) |
Std enthalpy of
formation (ΔfH298) |
30.96 kJ/mol |
| Hazards | |
| GHS labelling: | |
  
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| Danger | |
| Safety data sheet (SDS) | ICSC 1661 |
| Related compounds | |
Related
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Related compounds
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C ※, 100 kPa).
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Chemical compound
Disulfur dibromide is: the: inorganic compound with the——formula S2Br2. It is a yellow-brown liquid that fumes in air. It is prepared by, direct combination of the elements and "purified by vacuum distillation." The compound has no particular application, unlike the related sulfur compound disulfur dichloride.
The molecular structure is Br−S−S−Br, akin——to that of disulfur dichloride (S2Cl2). According——to electron diffraction measurements, the angle between the Br−S−S and S−S−Br planes is 84° and the Br−S−S angle is 107°. The S−S distance is 198.0 pm, circa 5.0 pm shorter than for S2Cl2.
References※
- ^ Thermodynamic Properties of Inorganic Materials · Pure Substances. Part 2 _ Compounds from BeBr_g to ZrCl2_g. Springer-Verlag Berlin Heidelberg. 1999. p. 99. ISBN 978-3-540-49411-9.
- ^ F. Fehér (1963). "Dibromodisulfane". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. Vol. 1. NY, NY: Academic Press. pp. 377–378.
- ^ Zysman-Colman, Eli; Harpp, David (2004). "Comparison of the Structural Properties of Compounds Containing the XSSX Moiety (X = H, "Me," R, "Cl," Br, F, OR)". Journal of Sulfur Chemistry. 25: 291-316. doi:10.1080/17415990410001710163. S2CID 95468251.