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Tin(IV) sulfide

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
1315-01-1 YesY
3D model (Jmol) Interactive image
(S=Sn=S): Interactive image
ChEBI CHEBI:50886 N
ECHA InfoCard 100.013.867
EC Number 215-252-9
PubChem 73977
15238661 (S=Sn=S)
UNII YVY89V9BUH N
Properties
S2Sn
Molar mass 182.83 g·mol−1
Appearance Gold-yellow powder
Odor Odorless
Density 4.5 g/cm3
Melting point 600 °C (1,112 °F; 873 K)
decomposes
Insoluble
Solubility Soluble in aq. alkalis, decompose in aqua regia
Insoluble in alkyl acetates, acetone
Structure
Rhombohedral, hP3
P3m1, No. 164
3 2/m
a = 3.65 Å, c = 5.88 Å
α = 90°, β = 90°, γ = 120°
Octahedral (Sn4+)
Hazards
GHS pictograms The exclamation-mark pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)
GHS signal word Warning
H302, H312, H315, H319, H332, H335
P261, P280, P301+312, P302+352, P304+340, P305+351+338, P332+313
NFPA 704
Flammability code 0: Will not burn. E.g., water Health code 1: Exposure would cause irritation but only minor residual injury. E.g., turpentine Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N  (what is YesYN ?)
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. It occurs naturally as the rare mineral berndtite. It is useful as semiconductor material with band gap 2.2 eV.

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 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


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