Molecular and crystal structure of an iodo-gold-silver-platinum cluster, [(Ph3P)6Au6Ag6Pt(AgI3)2](THF)2, with a trimetallic icosahedral core capped with two planar [AgI3] units

The synthesis and crystal structure of the first trimetallic iodo-gold-silver-platinum cluster, [(Ph3P)6Au6Ag6Pt(AgI3)2](THF)2, with a centered icosahedral metal core and two planar AgI3 capping units are described. The cluster core serves as the basic building block for a new series of trimetallic (AuAgPt) polyicosahedral clusters with iodo ligands. In the crystal, the clusters form a clathrate structural network capable of stabilizing weakly hydrogen-bonded (THF)2 dimers.