Triphenylphosphine-stabilized gold

Ligand-stabilized metal nanoparticles such as triphenylphosphine-stabilized gold nanoparticles were usually synthesized by reduction of the corresponding metal ions or complexes with excess diborane. Tetraalkylammonium salts of hydro-... 

Purification yields 200-300 mg of triphenylphosphine-stabilized gold nanoparticles, which should be stored cold (—20°C) in the sofid state, or immediately converted to thiol- or amine-stabilized nanoparticles through subsequent reaction with the appropriate ligand. The particles decompose in solution thus manipulation of the product in solution should be minimized. 

The 1.5-nm nanoparticles readily react with thiol or amine-terminated ligands under mild conditions to yield thiol- or amine-stabilized nanoparticles. Triphenylphosphine-stabilized particles thermally decompose with the production of (PPh3)AuCl and metallic gold. 

P21AU101CI5C378H315, Gold, triphenylphosphine-stabilized nanoparticles, 34 228 P3oH372h Ioi32N4205Q4-—3OOH2O, Molybdate, polyoxo-, spherical cluster with hypopho-sphite ion, hydrate, 34 196... 

Sodium salts of sulfonated triphenylphosphine P(m-C5H4S03Na)3 or alkyltriphenyl-methyltrisulfonates function as stabilizers for hydrosols of colloidal rhodium and (C6H5)2P-p-C6H5S03Na has been used by Schmid to prepare water soluble gold clusters which are isolable and redispersible without agglomeration [202]. 

Phosphine Chalcogenides as Ligands. - The enhanced stability provided by two triphenylphosphine oxide ligands has enabled the first crystal structure analysis of a non-haem-di-iron-dioxygen adduct. Complexes of the bis(phosphine oxide) (213 Z=0) with copper(I) and copper(II), and of the related disulfide (213 Z=S) with gold(I) and silver(I), have been characterised. 

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