Palladium(II) sulfate - Misplaced Pages

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Palladium(II) sulfate
Names
Other names Palladous sulfate
Identifiers
CAS Number	13566-03-5
3D model (JSmol)	Interactive image
ChemSpider	145977
ECHA InfoCard	100.033.583
EC Number	236-957-8
PubChem CID	166846
CompTox Dashboard (EPA)	DTXSID30884517
InChI InChI=1S/H2O4S.Pd/c1-5(2,3)4;/h(H2,1,2,3,4);/q;+2/p-2Key: RFLFDJSIZCCYIP-UHFFFAOYSA-L
SMILES .S(=O)(=O)()
Properties
Chemical formula	PdSO₄
Molar mass	202.48 g/mol
Appearance	Red-brown solid (anhydrous)
Density	4.2 g/cm
Melting point	525 °C (977 °F; 798 K) (decomposition)
Solubility in water	Hydrolysis
Solubility	Soluble in conc. sulfuric acid
Structure
Crystal structure	Monoclinic
Space group	C2/c
Lattice constant	a = 7.84 Å, b = 5.18 Å, c = 7.91 Åα = 90°, β = 95.6°, γ = 90°
Thermochemistry
Std molar entropy (S₂₉₈)	97.5 J/(mol·K)
Std enthalpy of formation (Δ_fH₂₉₈)	-672.4 kJ/mol
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H302, H314
Precautionary statements	P260, P264, P270, P280, P301+P317, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P330, P363, P405, P501
Related compounds
Other cations	Nickel(II) sulfate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references

Chemical compound

Palladium(II) sulfate is an inorganic chemical compound with the formula PdSO₄. It is a hygroscopic red-brown solid that forms the dihydrate, PdSO₄·2H₂O.

Preparation and properties

Palladium(II) sulfate is produced by the reaction of palladium metal with a mixture of nitric acid and sulfuric acid. It can also be produced by the reaction of palladium(II) sulfide and oxygen in dimethylformamide.

When anhydrous palladium(II) sulfate absorbs moisture from the air, it forms a greenish-brown dihydrate. The anhydrous form can be regenerated by the heating of the dihydrate at 202 °C.

Anhydrous palladium(II) sulfate decomposes to palladium(II) oxide at 525 °C releasing sulfur trioxide:

PdSO₄ → PdO + SO₃

References

^ Thomas Dahmen; Pia Rittner; Silke Böger-Seidl; Reginald Gruehn (1994). "Beiträge zum thermischen Verhalten von Sulfaten XIV. Zum thermischen Verhalten von PdSO₄ · 2H₂O und PdSO₄ · 0.75H₂O sowie zur Struktur von M-PdSO₄" [Contributions to the thermal behavior of sulfates XIV. On the thermal behavior of PdSO₄ · 2H₂O and PdSO₄ · 0.75H₂O as well as the structure of M-PdSO4]. Journal of Alloys and Compounds (in German). 216 (1): 11–19. doi:10.1016/0925-8388(94)91034-0.
^ Georg Brauer: Handbuch der präparativen anorganischen Chemie. 3., umgearb. Auflage. Band III. Enke, Stuttgart 1981, ISBN 3-432-87823-0, p. 1731
Turki Alkathiri; Kai Xu; Bao Yue Zhang; Muhammad Waqas Khan; Azmira Jannat; Nitu Syed; Ahmed F. M. Almutairi; Nam Ha; Manal M. Y. A. Alsaif; Naresha Pillai; Zhong Li; Torben Daeneke; Jian Zhen Ou (2022). "2D Palladium Sulphate for Visible-Light-Driven Optoelectronic Reversible Gas Sensing at Room Temperature". Small Science. 2 (3). doi:10.1002/smsc.202100097.
^ R. Eskenazi; J. Raskovan; R. Levitus (1966). "Sulphato complexes of palladium (II)". Journal of Inorganic and Nuclear Chemistry. 28 (2): 521–526. doi:10.1016/0022-1902(66)80333-0.
W. Manchot; A. Waldmüller (1926). "Zur Kenntnis der Metall-Nitroso-Verbindungen: Über Stickoxyd-Verbindungen des Palladiums" [For knowledge of metal-nitroso compounds: About nitrogen oxide compounds of palladium]. Berichte der Deutschen Chemischen Gesellschaft (in German). 59 (9): 2363–2366. doi:10.1002/cber.19260590931.