Palladium(II) sulfide

Palladium(II) sulfide
	; Ball-and-stick model of the crystal structure[1]
Names
	Other names Palladium monosulfide
Identifiers
CAS Number	12648-43-0 ; 12125-22-3;
3D model (JSmol)	Interactive image;
ChemSpider	9484517;
ECHA InfoCard	100.031.979
EC Number	235-190-6;
PubChem CID	82926;
CompTox Dashboard (EPA)	DTXSID00893217 ;
	InChI InChI=1S/Pd.S Key: NRUVOKMCGYWODZ-UHFFFAOYSA-N;
	SMILES [S].[Pd];
Properties
Chemical formula	PdS
Appearance	brown solid[2] or black[3] or grey[4] metallic crystals
Related compounds
Other anions	PdO
Other cations	NiS, PtS
Related compounds	PdS2
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Palladium(II) sulfide is a chemical compound of palladium and sulfur with the chemical formula PdS. Like other palladium and platinum chalcogenides, palladium(II) sulfide has complex structural, electrical and magnetic properties.[2][4]

Preparation

Palladium(II) sulfide is formed when hydrogen sulfide is passed through an aqueous solution containing palladium in the +2 oxidation state:[2]

Pd²⁺ + H₂S → PdS + 2H⁺

Berzelius reacted palladium directly with sulfur to produce palladium(II) sulfide in 1813:[4]

Pd + S → PdS

Structure

The crystal structure of PdS contains approximately square planar palladium centres and tetrahedral sulfur centres.[1]

Reactivity

If palladium(II) sulfide is heated with an excess of sulfur, palladium disulfide is formed:[2]

PdS + S → PdS₂

Related compounds

A variety of other compounds in the Pd-S system have been reported, including Pd₄S, Pd_2.8S, Pd_2.2S and PdS₂.[4] The mineral Braggite has the composition (Pt, Pd, Ni)S and is isomorphous with PdS.[3]

References

Brese, N. E.; Squattrito, P. J.; Ibers, J. A. (1985). "Reinvestigation of the structure of PdS". Acta Crystallogr. C. 41 (12): 1829–1830. doi:10.1107/S0108270185009623.
Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 1152. ISBN 978-0-08-037941-8.
Gaskell, T. F. (1937). "The Structure of Braggite and Palladium Sulphide". Z. Kristallogr. 96 (1–6): 203–213. doi:10.1524/zkri.1937.96.1.203. S2CID 102295767.
Grønvold, Fredrik; Røst, Erling (1956). "On the Sulfides, Selenides, and Tellurides of Palladium". Acta Chemica Scandinavica. 10: 1620–1634. doi:10.3891/acta.chem.scand.10-1620.

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[BreseSquattritoIbers-1] Brese, N. E.; Squattrito, P. J.; Ibers, J. A. (1985). "Reinvestigation of the structure of PdS". Acta Crystallogr. C. 41 (12): 1829–1830. doi:10.1107/S0108270185009623.

[G&E-2] Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 1152. ISBN 978-0-08-037941-8.

[Gaskell-3] Gaskell, T. F. (1937). "The Structure of Braggite and Palladium Sulphide". Z. Kristallogr. 96 (1–6): 203–213. doi:10.1524/zkri.1937.96.1.203. S2CID 102295767.

[Grønvold&Røst-4] Grønvold, Fredrik; Røst, Erling (1956). "On the Sulfides, Selenides, and Tellurides of Palladium". Acta Chemica Scandinavica. 10: 1620–1634. doi:10.3891/acta.chem.scand.10-1620.