Disulfur dibromide
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![]() Sulfur, S Bromine, Br | |
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Names | |
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IUPAC name Dibromodisulfane | |
Other names Bromosulfanyl thiohypobromite Disulfur dibromide | |
Identifiers | |
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ECHA InfoCard | 100.032.821 ![]() |
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InChI
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Properties | |
Chemical formula | S2Br2 |
Molar mass | 223.93 g·mol−1 |
Appearance | Orange/yellow liquid |
Density | 2.703 g/cm3 |
Boiling point | 46–48 °C (115–118 °F; 319–321 K) (0.1 mmHg) |
Structure | |
Point group | C2 |
Coordination geometry | 2 at sulfur atoms |
Molecular shape | gauche |
Thermochemistry | |
Std molar entropy (S⦵298) | 350.52 J/(mol·K)[1] |
Std enthalpy of formation (ΔfH⦵298) | 30.96 kJ/mol[1] |
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Safety data sheet (SDS) | ICSC 1661 |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). ![]() ![]() ![]() Infobox references |
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.[2] 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 Bra−S−S and S−S−Brb 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.[3]
References
- ^ a b 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 (4): 291-316. doi:10.1080/17415990410001710163. S2CID 95468251.
- v
- t
- e
disulfides
- Al2S3
- As2S2
- As2S3
- As2S5
- As4S4
- Au2S
- Au2S3
- B2S3
- BaS
- BeS
- Bi2S3
- CS2
- C3S2
- C6S6
- CaS
- CdS
- CeS
- CoS
- Cr2S3
- CSSe
- CSTe
- CuFeS2
- CuS
- D2S
- Dy2S3
- Er2S3
- EuS
- FeS2
- GaS
- H2S
- HfS2
- HgS
- In2S3
- K2S
- LaS
- LiS
- MgS
- MoS2
- MoS3
- NaHS
- Na2S
- NH4HS
- NiS
- P4Sx
- PbS
- PbS2
- PSCl3
- PSI3
- PtS
- ReS2
- Re2S7
- SiS
- SrS
- TlS
- VS
- SeS2
- S2U
- WS2
- WS3
- Sb2S3
- Sb2S5
- Sb4S3O3
- Sm2S3
- Y2S3
- ZrS2
- La
2O
2S - Gd
2O
2S
- S2Br2
- SBr2
- S2Cl2
- SCl2
- SCl4
- SF2
- SF4
- S2F10
- SF6
- S2I2
and oxyhalides
- SO2
- SO3
- SOBr2
- SOCl2
- SOF2
- SOF4
- H2S3O6
- H2SO3
- H2SO4
- H2S2O7
- H2SO5
Sulfites |
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Sulfates |
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- C2H4S
- C2H6S3
- C4H4S
- C32H66S2
- CHCl3S
- C2H3SN