화학공학소재연구정보센터
Chemistry Letters, Vol.42, No.12, 1487-1489, 2013
Novel Intercluster Compounds Composed of a Tetra{phosphanegold(I)}oxonium Cation and an alpha-Keggin Polyoxometalate Anion Linked by Three Monomeric Phosphanegold(I) Units
Using highly negatively charged Keggin polyoxometalates (POMs), [alpha-XW12O40](5-) (X = Al and B), novel intercluster compounds composed of a tetrakis {triphenylphosphanegold(I)}-oxonium cation and an alpha-Keggin POM linked by three monomeric triphenylphosphanegold(I) units were prepared. A single peak was observed in the solution P-31{H-1} NMR for these clusters, which is consistent with rapid exchange of the phosphanegold(I) units in the tetra{phosphanegold(I)}oxonium cluster cation with the three monomeric phosphanegold(I) species linked to the POM. Importantly, these compounds may be relevant transition states or intermediates in POM-mediated tetra{phosphanegold(I)}oxonium cluster formation.