Octanuclear Silver Sulfide Cluster [Ag8(µ8‐S)(µ‐mimt)12](NO3)6 Containing the First Thione‐Stabilized Ag8 Cube Caging a Sulfide Anion

Abstract

The first thione‐protected cluster [Ag8(µ8‐S)(mimt)12](NO3)6 (1) (mimt = 4‐methyl‐1,3‐imidazolidine‐2‐thione) was synthesized by gradual S2– release from Na2S2O3 in solution and was structurally characterized. The cluster contains a novel octanuclear Ag8 cube that cages an S2– ion at the center, and the shell is stabilized by 12 µ2‐mimt ligands. Each thione ligand bridges two Ag atoms to form the cubic edges. Cluster 1 exhibits luminescent emission in the solid state at 298 K with a maximum peak at 512 nm.