Tin(II) sulfide

Tin(II) sulfide^[1]

Names
IUPAC name Tin(II) sulfide
Other names Tin monosulfide Herzenbergite
Identifiers
CAS Number	1314-95-0
EC Number	215-248-7
Jmol 3D image	Interactive graph
PubChem	426379
InChI InChI=1S/S.Sn
SMILES S=[Sn]
Properties
Chemical formula	SnS
Molar mass	150.775 g/mol
Appearance	dark brown solid
Density	5.22 g/cm^3
Melting point	882 °C (1,620 °F; 1,155 K)
Boiling point	about 1230 ˚C
Solubility in water	Insoluble
Structure
Crystal structure	GeS type (orthorhombic), oP8
Space group	Pnma, No. 62
Lattice constant	a = 11.18 Å, b = 3.98 Å, c = 4.32 Å[2]
Coordination geometry	asymmetric 3-fold (strongly distorted octahedral)
Hazards
Main hazards	Irritant
Related compounds
Other anions	Tin(II) oxide Tin selenide Tin telluride
Other cations	Carbon monosulfide Silicon monosulfide Germanium monosulfide Lead(II) sulfide
Related compounds	Tin(IV) sulfide Tributyl tin sulfide
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

Tin(II) sulfide is a chemical compound of tin and sulfur. The chemical formula is SnS. Its natural occurrence concerns herzenbergite, a rare mineral.

Synthesis

Tin(II) sulfide can be prepared by reacting tin with sulfur, or tin(II) chloride with hydrogen sulfide.

Sn + S → SnS

SnCl₂ + H₂S → SnS + 2HCl

Properties

Tin(II) sulfide is a brown solid, insoluble in water, but soluble in concentrated hydrochloric acid. Tin (II) sulfide is soluble in (NH4)₂S. It has a layer structure similar to that of black phosphorus.^[3] As per black phosphorus, tin(II) sulfide can be ultrasonically exfoliated in liquids to produce atomically thin semiconducting SnS sheets that have a wider optical band gap (>1.5 eV) compared to the bulk crystal.^[4]

References

1. Record of Tin(II) sulfide in the GESTIS Substance Database of the IFA, accessed on 4/9/2007
2. del Bucchia, S.; Jumas, J.C.; Maurin, M. (1981). "Contribution a l'etude de composes sulfures d'etain (II): Affinement de la structure de Sn S". Acta Crystallogr. B 37: 1903. doi:10.1107/s0567740881007528.
3. Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 1233. ISBN 0-08-037941-9.
4. Brent et al. J. Am. Chem. Soc., 2015, 137 (39), pp 12689–12696