Palladium(II) sulfate

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-2 Key: RFLFDJSIZCCYIP-UHFFFAOYSA-L;
	SMILES [Pd+2].S(=O)(=O)([O-])[O-];
Properties
Chemical formula	PdSO4
Molar mass	202.48 g/mol
Appearance	Red-brown solid (anhydrous)
Density	4.2 g/cm3
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 Å α = 90°, β = 95.6°, γ = 90°
Thermochemistry
Std molar; entropy (S⦵298)	97.5 J/(mol·K)
Std enthalpy of; formation (ΔfH⦵298)	-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 [77 °F], 100 kPa). Infobox references

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.^[1]

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.^[1]^[3]^[4]^[5]

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.^[1]^[4]

Anhydrous palladium(II) sulfate decomposes to palladium(II) oxide at 525 °C releasing sulfur trioxide:^[1]

PdSO₄ → PdO + SO₃

References

^ ^a ^b ^c ^d ^e ^f ^g 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.
^ ^a ^b 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.
^ ^a ^b 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.

[pdso4-1] ^ ^a ^b ^c ^d ^e ^f ^g 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.

[brauer-2] Georg Brauer: Handbuch der präparativen anorganischen Chemie. 3., umgearb. Auflage. Band III. Enke, Stuttgart 1981, ISBN 3-432-87823-0, p. 1731

[3] 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.

[sulf-4] 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.

[5] 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.

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