A new 1-D In–Sb–S chain based on the linkage of bow-like [Sb3S7] units and pseudosemicube [In2SbS4] clusters

The new thioindate–thioantimonate [Co(dien)2]2In2Sb4S11 (1, dien = diethylenetriamine) was prepared under solvothermal conditions and structurally characterized. 1 consists of 1-D inorganic [In2Sb4S114−]n chains constructed by bow-like trimeric [Sb3S7] units and heterometallic pseudosemicube [In2SbS4] clusters, and [Co(dien)2]2+ cations as counterions. The intermolecular H-bond interactions between 1-D inorganic [In2Sb4S114−]n anion and [Co(dien)2]2+ cation result in a 3-D supramolecular network.