Precious metal compounds

Silver carbonate is a pale yellow, light-sensitive powder used as a stoichiometric base and halide scavenger in palladium-catalysed C–H activation and cross-coupling, as the promoter in Koenigs–Knorr glycosylation, and, supported on Celite as Fétizon's reagent, for the selective oxidation of primary and secondary alcohols to aldehydes and ketones. It is also a convenient precursor for silver catalysts and silver(I) complexes. Approximately 78% silver by mass; every lot is assayed and released with a certificate of analysis.

Grade

≥99.9% (metals basis); Ag ≥ 77%

Pack sizes

25 g, 100 g, 500 g

Silver acetate is a white to grey-white crystalline solid, moderately soluble in water, used as a soluble silver source and mild oxidant in organic synthesis: decarboxylative and oxidative couplings, acetoxylation, silver-catalysed cycloadditions of azomethine ylides, halide abstraction from metal complexes and the preparation of silver(I) N-heterocyclic carbene complexes. It is also the silver precursor in reactive silver inks and antimicrobial coatings. Approximately 64.6% silver by mass; supplied with a lot-specific assay and certificate of analysis.

Grade

≥99.9% (metals basis); Ag ≥ 64%

Pack sizes

25 g, 100 g, 500 g

Palladium(II) acetate is the most widely used palladium precatalyst in organic synthesis: Suzuki–Miyaura, Heck, Buchwald–Hartwig, Sonogashira, Negishi and Stille couplings, C–H activation and functionalisation, and Wacker-type oxidations. It is also the usual starting point for Pd nanoparticles, supported palladium catalysts and palladacycles. Supplied as the pure trimer, free of the nitrite-containing impurity, with a lot-specific palladium assay.

Grade

≥99.9% (metals basis); Pd 47.4%, trimer form

Pack sizes

1 g, 5 g, 25 g, 100 g

Palladium(II) chloride is a dark red-brown, hygroscopic solid and the most common entry point to palladium chemistry. It is the precursor to PdCl2(PPh3)2, PdCl2(dppf), PdCl2(MeCN)2, sodium and potassium tetrachloropalladate and tetraamminepalladium salts; the catalyst of the Wacker oxidation; a source for Pd/C and other supported hydrogenation catalysts; and the sensitiser used in electroless plating activation. It is also used in carbon monoxide detectors and test papers. Approximately 60% palladium by mass; each lot is assayed and released with a certificate of analysis.

Grade

≥99.9% (metals basis); Pd ≥ 59.5%

Pack sizes

1 g, 5 g, 25 g, 100 g

Sodium tetrachloropalladate(II) is a red-brown, water-soluble palladium(II) salt, the usual choice when a palladium source must be dissolved directly in water or alcohol. It is used for the aqueous synthesis of palladium nanoparticles and colloids, for Pd/C and other supported catalysts, for electroless plating activation, for ligand-free and aqueous-phase cross-coupling, and as a precursor to palladium(II) complexes. Approximately 36% palladium by mass; each lot is assayed and released with a certificate of analysis.

Grade

≥99.9% (metals basis); Pd ≈ 36%

Pack sizes

1 g, 5 g, 25 g

Potassium tetrachloropalladate(II) is a red-brown, water-soluble palladium(II) salt used as a precursor for shape-controlled palladium nanocrystals, palladium(II) coordination and organometallic complexes, PdCl2(ligand)2 precatalysts, supported catalysts and electrocatalysts, and as a catalyst precursor for cross-coupling in aqueous media. Approximately 32.6% palladium by mass; supplied with a lot-specific assay and certificate of analysis.

Grade

≥99.9% (metals basis); Pd ≈ 32.5%

Pack sizes

1 g, 5 g, 25 g