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Disulfur information


Disulfur
Ball and stick model of disulfur molecule
Names
IUPAC name
Disulfur[1]
Systematic IUPAC name
Disulfene
Other names
Diatomic sulfur

Sulfur dimer

Disulphur
Identifiers
CAS Number
  • 23550-45-0 checkY
3D model (JSmol)
  • Interactive image
ChEBI
  • CHEBI:29387 checkY
ChemSpider
  • 4574100 checkY
Gmelin Reference
753
PubChem CID
  • 5460602
CompTox Dashboard (EPA)
  • DTXSID20420100 Edit this at Wikidata
InChI
  • InChI=1S/S2/c1-2 checkY
    Key: MAHNFPMIPQKPPI-UHFFFAOYSA-N checkY
SMILES
  • S=S
Properties
Chemical formula
S2
Molar mass 64.12 g·mol−1
Dipole moment
0 D
Thermochemistry
Heat capacity (C)
32.51 kJ K−1 mol−1
Std molar
entropy (S298)
228.17 J K−1 mol−1
Std enthalpy of
formation fH298)
128.60 kJ mol−1
Related compounds
Related compounds
Triplet oxygen
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Disulfur is the diatomic molecule with the formula S2.[2] It is analogous to the dioxygen molecule but rarely occurs at room temperature. This violet gas is the dominant species in hot sulfur vapors. S2 is one of the minor components of the atmosphere of Io, which is predominantly composed of SO2.[3] The instability of S2 is usually described in the context of the double bond rule.

  1. ^ ebi.ac.uk/chebi/searchId.do?chebiId=29387
  2. ^ Steudel, Ralf; Eckert, Bodo (2003). "Solid Sulfur Allotropes". Elemental Sulfur and Sulfur-Rich Compounds I. Topics in Current Chemistry. Vol. 230. pp. 58–68. doi:10.1007/b12110. ISBN 978-3-540-40191-9.
  3. ^ Lellouch, E. (January 2005). "Io's Atmosphere and Surface-Atmosphere Interactions". Space Science Reviews. 116 (1–2): 211–224. Bibcode:2005SSRv..116..211L. doi:10.1007/s11214-005-1957-z. S2CID 121867974.

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Disulfur

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Disulfur is the diatomic molecule with the formula S2. It is analogous to the dioxygen molecule but rarely occurs at room temperature. This violet gas...

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Disulfur dichloride

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Disulfur dichloride (or disulphur dichloride by the British English spelling) is the inorganic compound of sulfur and chlorine with the formula S2Cl2....

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Disulfur monoxide

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Disulfur monoxide or sulfur suboxide is an inorganic compound with the formula S2O, one of the lower sulfur oxides. It is a colourless gas and condenses...

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Disulfur decafluoride

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Disulfur decafluoride is a chemical compound with the formula S2F10. It was discovered in 1934 by Denbigh and Whytlaw-Gray. Each sulfur atom of the S2F10...

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Disulfur dioxide

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Disulfur dioxide, dimeric sulfur monoxide or SO dimer is an oxide of sulfur with the formula S2O2. The solid is unstable with a lifetime of a few seconds...

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Disulfur diiodide

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Disulfur diiodide is an unstable inorganic chemical compound with the chemical formula S2I2. It is a red-brown solid that decomposes above −30 °C to elemental...

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Sulfur monoxide

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dilute gas phase. When concentrated or condensed, it converts to S2O2 (disulfur dioxide). It has been detected in space but is rarely encountered intact...

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Disulfur dinitride

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Disulfur dinitride is the chemical compound with the formula S2N2. Passing gaseous S4N4 over silver metal wool at 250–300 °C at low pressure (1 mmHg) yields...

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Disulfur difluoride

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Disulfur difluoride is an inorganic compound with the chemical formula S2F2. It is a halide of sulfur. Disulfur difluoride has a chain structure F−S−S−F...

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Disulfur dibromide

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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...

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Sulfur oxide

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dimer, Disulfur dioxide (S2O2) Sulfur dioxide (SO2) Sulfur trioxide (SO3) Higher sulfur oxides (SO3 and SO4 and polymeric condensates of them) Disulfur monoxide...

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Empirical formula

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simply be SO, as is the empirical formula of disulfur dioxide, S2O2. Thus, sulfur monoxide and disulfur dioxide, both compounds of sulfur and oxygen,...

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Sulfur fluoride

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hexafluoride, SF6 Disulfur decafluoride, S2F10 Sulfur tetrafluoride, SF4 Disulfur tetrafluoride, S2F4 Sulfur difluoride, SF2 Disulfur difluoride, S2F2...

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Disulfide

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Examples: Hydrogen disulfide (S2H2), the simplest inorganic disulfide Disulfur dichloride (S2Cl2), a distillable liquid. Iron disulfide (FeS2), or pyrite...

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Sulfur dichloride

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acids. SCl2 is produced by the chlorination of either elemental sulfur or disulfur dichloride. The process occurs in a series of steps, some of which are:...

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Sulfur nitride

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hexanitride, S5N6 tetrasulfur tetranitride, S4N4 tetrasulfur dinitride, S4N2 disulfur dinitride, S2N2 polythiazyl, (SN)x thiatetrazole, SN4 Additionally, some...

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Sulfur

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observed including the sulfur-rich oxides include sulfur monoxide, disulfur monoxide, disulfur dioxides, and higher oxides containing peroxo groups. Sulfur...

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Allotropes of sulfur

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consist of criss-crossed helices. It is also called χ-sulfur or ω2-sulfur. Disulfur, S2, is the predominant species in sulfur vapour above 720 °C (a temperature...

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Sulfuric acid

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reacts with sulfur to form disulfur dibromide) S2Br2 + 8 H2O + 5 Br2 → 2 H2SO4 + 12 HBr (oxidation and hydration of disulfur dibromide) Prior to 1900,...

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Double bond

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dioxygen nitroso compound sulfoxide, sulfone, sulfinic acid, sulfonic acid N azo compound S disulfur Si silenes Ge germenes Sn stannenes Pb plumbenes...

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Lower sulfur oxides

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trapped at low temperature. Disulfur dioxide (S2O2) is a dimer of sulfur monoxide. It has C2v structure (planar). Disulfur monoxide (S2O) is an analogue...

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Diatomic molecule

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("cracking") elemental phosphorus gives diphosphorus (P2). Sulfur vapor is mostly disulfur (S2). Dilithium (Li2) and disodium (Na2) are known in the gas phase. Ditungsten...

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Difluorodisulfanedifluoride

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sulfur difluoride, sulfur tetrafluoride, sulfur hexafluoride, disulfur decafluoride, disulfur difluoride and thiothionyl fluoride, difluorotrisulfane, and...

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Sulfur compounds

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observed including the sulfur-rich oxides include sulfur monoxide, disulfur monoxide, disulfur dioxides, and higher oxides containing peroxo groups. Sulfur...

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Explosive

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Diazodinitrophenol Diazomethane Diethyl ether peroxide 4-Dimethylaminophenylpentazole Disulfur dinitride Ethyl azide Explosive antimony Fluorine perchlorate Fulminic...

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Sulfur hexafluoride

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re-form SF 6, a process termed "self-healing". Arcing or corona can produce disulfur decafluoride (S 2F 10), a highly toxic gas, with toxicity similar to phosgene...

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Si

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chemical descriptor; See prochirality Silicon, symbol Si, a chemical element Disulfur diiodide, empirical formula SI .si, the Internet country code top-level...

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Pulmonary agent

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Disulfur decafluoride Perfluoroisobutene Acrolein Diphenylcyanoarsine Phosgene is the most dangerous commonly used pulmonary agent (although disulfur...

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Halogenation

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relatively large scale is for the production of phosphorus trichloride and disulfur dichloride. Wikiquote has quotations related to Halogenation. Dehalogenation...

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