Palladium disulfide
Names
Other names
Palladium(II) disulfide
Identifiers
3D model (JSmol)
  • InChI=1S/Pd.S2/c;1-2/q+2;-2
    Key: ZMOVFMLVWHDWBO-UHFFFAOYSA-N
  • [S-][S-].[Pd+2]
Properties
PdS2
Appearance grey solid[1] or black crystalline powder[2] metallic crystals
Related compounds
Other anions
 PdSe2, PdTe2
Other cations
 PtS2, RuS2, IrS2
Related compounds
 PdS
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Palladium disulfide is a chemical compound of palladium and sulfur with the chemical formula PdS2.[1]

Preparation

Palladium disulfide is formed when palladium(II) sulfide is heated with an excess of sulfur.[1]

PdS + S → PdS2

However, some starting material may remain even after heating for many months. An alternative route involves heating palladium(II) chloride and excess sulfur to 450 °C in a sealed tube, then washing the crude product with carbon disulfide. This procedure yields PdS2 free of PdS.[2]

Structure

PdS2 contains sulfur-sulfur bonds so it can be thought of as a disulfide that formally consists of S22− and Pd2+ ions.[3] It adopts a layered crystal structure that contains square planar palladium centres and trigonal pyramidal sulfur centres.[2]

A variety of other compounds in the Pd-S system have been reported, including Pd4S, Pd2.8S, Pd2.2S and PdS.[2]

See also

References

  1. 1 2 3 Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 1152. ISBN 978-0-08-037941-8.
  2. 1 2 3 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.
  3. ↑ Selb, Elisabeth; Götsch, Thomas; Janka, Oliver; Penner, Simon; Heymann, Gunter (2017). "Crystal Structures of the High‐Pressure Palladium Dichalcogenides Pd0.94(1)S2 and Pd0.88(1)Se2 Comprising Exceptional PdIV Oxidation States". Z. Anorg. Allg. Chem. 643 (21): 1415–1423. doi:10.1002/zaac.201700140.
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