Gold-platinum clusters, synthesis

The high-yield synthesis of the first platinum-gold cluster is reported here and involves the reaction of chlorohydridobis(triethylphosphine)platinum(II) with the cation [Au(PPh3)], itself generated from chloro(triphenyl-phosphine)gold(I). 

The affinity of crown thioethers for heavy metals - and their antipathy to the biologically important ions, such as Na, Ca, and Mg -suits crown thioethers particularly well for decorporation of toxic metal ions. Similarly, crown thioethers may find potential use in the hydrometallurgical winning of precious metals such as silver, gold, and platinum, or as the basis for ion-selective electrodes [219]. Other potential applications [220] may arise from use of crown thioethers as structural building blocks or capping members (e.g. (M(9S3) ) for synthesis of metal cluster compounds. 

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