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]

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. ^ a b c 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