Palladium disulfide

Palladium disulfide  |  |

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Names
Other names

Palladium(II) disulfide

Identifiers

CAS Number

* 12137-75-6 Y

3D model (JSmol)

* Interactive image

PubChem CID

* 163192485

InChI

* InChI=1S/Pd.S2/c;1-2/q+2;-2

Key: ZMOVFMLVWHDWBO-UHFFFAOYSA-N

SMILES

* [S-][S-].[Pd+2]

Properties

Chemical formula

| 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]

## Contents

* 1 Preparation
* 2 Structure
* 3 Related compounds
* 4 See also
* 5 References

## 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, instead of S2- and Pd4+ ions.[3] It adopts a layered crystal structure that contains square planar palladium centres and trigonal pyramidal sulfur centres.[2]

## Related compounds

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

## See also

* Pyrite
* Marcasite
* Platinum disulfide
* Platinum diselenide

## References

1. ↑ 1.0 1.1 1.2 Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 1152. ISBN 978-0-08-037941-8.
2. ↑ 2.0 2.1 2.2 2.3 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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* t
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Palladium compounds

Pd(0)|

* Pd(P(C6H5)3)4

| Organopalladium(0) compounds|

* Pd2((C6H5C2H2)2CO)3

|

Pd(II)|

* Pd(OCOCH3)2
* Pd((COCH3)2CH)2
* PdBr2
* PdCl2
* Pd(CN)2
* PdF2
* PdI2
* Pd(NO3)2
* PdO
* Na2PdCl4
* Fe(C5H4P(C6H5)2)2PdCl2
* Pd(P(C6H5)3)2Cl2

| Organopalladium(II) compounds|

* ((CH2)2CHPdCl)2
* (C5H5)Pd(C3H5)

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Pd(II,IV)|

* Pd2F6

Pd(IV)|

* PdF4

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