In‐Between Complex and Cluster: A 14‐Vertex Cage in [Ag₂Se₁₂]²⁺

Abstract

Foreshadowing a new selenium modification …︁? Upon treatment of red, amorphous selenium with the silver salts of two large weakly coordinating anions (WCA), the thermodynamically driven formation of [Ag2Se12]2+ occurred. The structure of the dication is an unprecedented D3d-symmetric 14-vertex cage built from six six-membered rings in a boat conformation that includes a weak argentophilic Ag–Ag bond.