Palladium(II) nitrate

Palladium(II) nitrate is the inorganic compound with the formula Pd(NO3)2.(H2O)x where x = 0 or 2. The anhydrous and dihydrate are deliquescent solids. According to X-ray crystallography, both compounds feature square planar Pd(II) with unidentate nitrate ligands. The anhydrous compound, which is a coordination polymer, is yellow.[1][2]

Palladium(II) nitrate
Names
IUPAC name
Palladium(II) nitrate
Other names
Palladium nitrate
Palladous nitrate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.030.228
UNII
  • InChI=1S/2NO3.Pd/c2*2-1(3)4;/q2*-1;+2 checkY
    Key: GPNDARIEYHPYAY-UHFFFAOYSA-N checkY
  • InChI=1/2NO3.Pd/c2*2-1(3)4;/q2*-1;+2
    Key: GPNDARIEYHPYAY-UHFFFAOYAP
  • [Pd+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O
Properties
Pd(NO3)2
Molar mass 230.43 g/mol
Appearance yellow solid
Density 3.546 g/cm3[1]
Melting point Decomposes >100 °C
Soluble
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Irritant, possibility of allergic reaction
Flash point Non-flammable
Related compounds
Other anions
 Palladium(II) chloride
Other cations
 Nickel(II) nitrate
Related compounds
 Silver nitrate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

As a solution in nitric acid, Pd(NO3)2 catalyzes the conversion of alkenes to dinitrate esters. Its pyrolysis affords palladium oxide.[3]

Preparation

Hydrated palladium nitrate may be prepared by dissolving palladium oxide hydrate in dilute nitric acid followed by crystallization. The nitrate crystallizes as yellow-brown deliquescent prisms. The anhydrous material is obtained by treating palladium metal with fuming nitric acid.[1]

References
  1. Bruns, Jörn; Klüner, Thorsten; Wickleder, Mathias S. (2015). "Oxoanionic Noble Metal Compounds from Fuming Nitric Acid: The Palladium Examples Pd(NO3)2 and Pd(CH3SO3)2". Chemistry - A European Journal. 21 (3): 1294–1301. doi:10.1002/chem.201405355. PMID 25431333.
  2. Laligant, Y.; Ferey, G.; Le Bail, A. (1991). "Crystal Structure of Pd(NO3)2(H2O)2". Materials Research Bulletin. 26 (4): 269–275. doi:10.1016/0025-5408(91)90021-D.
  3. Timothy T. Wenzel "Palladium(II) Nitrate" Encyclopedia of Reagents for Organic Synthesis 2001, John Wiley & Sons. doi:10.1002/047084289X.rp013


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