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]

Palladium(II) sulfate
Names
Other names
  • Palladous sulfate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.583 Edit this at Wikidata
EC Number
  • 236-957-8
  • InChI=1S/H2O4S.Pd/c1-5(2,3)4;/h(H2,1,2,3,4);/q;+2/p-2
    Key: RFLFDJSIZCCYIP-UHFFFAOYSA-L
  • [Pd+2].S(=O)(=O)([O-])[O-]
Properties
PdSO4
Molar mass 202.48 g/mol
Appearance Red-brown solid (anhydrous)
Density 4.2 g/cm3[1]
Melting point 525 °C (977 °F; 798 K)[1] (decomposition)
Hydrolysis[2]
Solubility Soluble in conc. sulfuric acid[2]
Structure[1]
Monoclinic
C2/c
a = 7.84 Å, b = 5.18 Å, c = 7.91 Å
α = 90°, β = 95.6°, γ = 90°
Thermochemistry
97.5 J/(mol·K)
-672.4 kJ/mol
Hazards
GHS labelling:
GHS05: CorrosiveGHS07: Exclamation mark
Danger
H302, H314
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).

Preparation and properties

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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

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  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.
  2. ^ a b 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.
  4. ^ 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.
  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.