Unusual luminescent octanuclear stellate platinacycle self-assembled by Pt-Ag bonds.

An unprecedented macrocyclic luminescent octanuclear cluster cyclo-[{Pt(C6Cl5)(2)(mu-OH)(mu-Ag)}(4)] (Pt-Ag)(2) was self-assembled by the formation of Pt(II)-Ag(I) bonds; the optical properties of this complex were also investigated.