Tin(IV) sulfide

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Tin(IV) sulfide
Ball-and-stick model of tin(IV) sulfide
Names
IUPAC name
Tin(IV) sulfide
Other names
Tin disulfide, Stannic sulfide, Mosaic gold
Identifiers
3D model (JSmol)
ChEBI
ECHA InfoCard 100.013.867 Edit this at Wikidata
EC Number
  • 215-252-9
UNII
  • InChI=1S/2S.Sn/q2*-2;+4 ☒N[inchi]
    Key: TUTLDIXHQPSHHQ-UHFFFAOYSA-N ☒N[inchi]
  • [S-2].[S-2].[Sn+4]
  • (S=Sn=S): S=[Sn]=S
Properties
S2Sn
Molar mass 182.83 g·mol−1
Appearance Gold-yellow powder
Odor Odorless
Density 4.5 g/cm3[1]
Melting point 600 °C (1,112 °F; 873 K)
decomposes[1]
Insoluble
Solubility Soluble in aq. alkalis, decompose in aqua regia[1]
Insoluble in alkyl acetates, acetone[2]
Structure
Rhombohedral, hP3[3]
P3m1, No. 164[3]
3 2/m[3]
a = 3.65 Å, c = 5.88 Å[3]
α = 90°, β = 90°, γ = 120°
Octahedral (Sn4+)[3]
Hazards
GHS labelling:
GHS07: Exclamation mark[4]
Signal word
 Warning
H302, H312, H315, H319, H332, H335[4]
P261, P280, P301+P312, P302+P352, P304+P340, P305+P351+P338, P332+P313[4]
NFPA 704 (fire diamond)
1
0
0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N  (what is checkY☒N ?)
Infobox references

Tin(IV) sulfide is a compound with the formula SnS
2. The compound crystallizes in the cadmium iodide motif, with the Sn(IV) situated in "octahedral holes' defined by six sulfide centers.[5] It occurs naturally as the rare mineral berndtite.[6] It is useful as semiconductor material with band gap 2.2 eV.[7]

Reactions[]

The compound precipitates as a brown solid upon the addition of H
2S to solutions of tin(IV) species. This reaction is reversed at low pH. Crystalline SnS
2 has a bronze color and is used in decorative coating[8] where it is known as mosaic gold.

The material also reacts with sulfide salts to give a series of thiostannates with the formula [SnS
2]
m[S]2n−
n. A simplified equation for this depolymerization reaction is

SnS
2 + S2−
 → 1/x[SnS2−
3]
x.

References[]

  1. ^ a b c Lide, David R., ed. (2009). CRC Handbook of Chemistry and Physics (90th ed.). Boca Raton, Florida: CRC Press. ISBN 978-1-4200-9084-0.
  2. ^ Comey, Arthur Messinger; Hahn, Dorothy A. (February 1921). A Dictionary of Chemical Solubilities: Inorganic (2nd ed.). New York: The MacMillan Company. p. 1080.
  3. ^ a b c d e Voort, G.F. Vander, ed. (2004). "Crystal Structure*" (PDF). ASM Handbook. 9 (Metallography and Microstructures): 29–43. doi:10.1361/asmhba0003722 (inactive 31 October 2021).CS1 maint: DOI inactive as of October 2021 (link)
  4. ^ a b c d "SDS of Stannic sulfide" (PDF). https://www.pfaltzandbauer.com. Connecticut, USA: Pfaltz & Bauer, Inc. Retrieved 2014-07-13. External link in |website= (help)
  5. ^ Wells, A.F. (1984) Structural Inorganic Chemistry, Oxford: Clarendon Press. ISBN 0-19-855370-6.
  6. ^ Vaughan, D. J.; Craig, J. R. "Mineral Chemistry of Metal Sulfides" Cambridge University Press, Cambridge: 1978. ISBN 0-521-21489-0.
  7. ^ L.A.Burton et al., J. Mater. Chem. A, 2016, 4, 1312-1318 DOI: 10.1039/C5TA08214E.
  8. ^ Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN 0-12-352651-5.

External links[]


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