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Palladium(II) acetate, Pd(OAc) 2. Most ionic compounds of palladium involve the Pd 2+ oxidation state. Palladium(II) chloride is a starting point in the synthesis of other palladium compounds and complexes. [1] Palladium(II) acetate plus triphenylphosphine is used as a catalyst in organic synthesis. [2]
Palladium is a chemical element; it has symbol Pd and atomic number 46. It is a rare and lustrous silvery-white metal discovered in 1802 by the English chemist William Hyde Wollaston. He named it after the asteroid Pallas (formally 2 Pallas), which was itself named after the epithet of the Greek goddess Athena, acquired by her when she slew Pallas.
In chemistry, compounds of palladium(III) feature the noble metal palladium in the unusual +3 oxidation state (in most of its compounds, palladium has the oxidation state II). Compounds of Pd(III) occur in mononuclear and dinuclear forms. Palladium(III) is most often invoked, not observed in mechanistic organometallic chemistry. [1] [2]
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Natural palladium (46 Pd) is composed of six stable isotopes, 102 Pd, 104 Pd, 105 Pd, 106 Pd, 108 Pd, and 110 Pd, although 102 Pd and 110 Pd are theoretically unstable. The most stable radioisotopes are 107 Pd with a half-life of 6.5 million years, 103 Pd with a half-life of 17 days, and 100 Pd with a half-life of 3.63 days.
[1,1'‑Bis(diphenylphosphino)ferrocene]palladium(II) dichloride is a palladium complex containing the bidentate ligand 1,1'-bis(diphenylphosphino)ferrocene (dppf), abbreviated as [(dppf)PdCl 2]. This commercially available material can be prepared by reacting dppf with a suitable nitrile complex of palladium dichloride : [ 1 ]
Palladium(II) sulfide is a chemical compound of palladium and sulfur with the chemical formula PdS. Like other palladium and platinum chalcogenides , palladium(II) sulfide has complex structural, electrical and magnetic properties.
Palladium compounds owe their reactivity to the ease of interconversion between Pd(0) and palladium(II) intermediates. There is no conclusive evidence however for the involvement of Pd(II) to Pd(IV) conversions in palladium mediated organometallic reactions. [9] One reaction invoking such mechanism was described in 2000 and concerned a Heck ...