{[Ir3(cod)3(μ3-S)2](μ3-S)SnCl}2 – a ternary Ir–Sn–S cluster with the iridium atoms in three different chemical environments

Reactions of Sn–S clusters with [IrCl(cod)]2 afforded an Ir–Sn–S cluster with unprecedented topology, {[Ir3(cod)3(μ3-S)2](μ3-S)SnCl}2, in which two [Ir3S2] units and a central [Sn2S2] unit are connected via Ir–S and Ir–Sn bonds. Each of the crystallographically independent Ir atoms exhibits a specific chemical environment. Quantum chemical studies shed light on the electronic structure of the multinary cluster and the Ir–Sn bonds.