[Ni(dien)2]3[Ge3Sb8S21]·0.5H2O: A new 2-D layered thiogermanate–thioantimonate with metal complexes as template ions

A new 2-D layered thiogermanate–thioantimonate [Ni(dien)2]3[Ge3Sb8S21]·0.5H2O (1, dien = diethylenetriamine) was synthesized under solvothermal conditions and structurally characterized. The polymeric [Ge3Sb8S21]6n−n anion in 1 is composed of heterometallic semicube [GeSb2S7] clusters and trigonal-pyramidal [SbS3] units, which are interconnected to build a 2-D layer with the large Sb18S18 heterorings. The apertures of the Sb18S18 heterorings are filled by three [Ni(dien)2]2+ complex cations as template ions. The absorption band edge of 1 is 2.29 eV, exhibiting properties of the semiconductor.

The linkage of heterometallic semicube [GeSb2S7] clusters and trigonal-pyramidal [SbS3] units into a 2-D sheet layer with the larger Sb18S18 heterorings, which are filled by [Ni (dien)2]2+ complex cations.Figure optionsDownload as PowerPoint slideHighlights
► One new thiogermanate–thioantimonate was obtained under solvothermal conditions.
► Metal complexes of compound 1 reside within the cavities of the 2-D Ge―S―Sb layer.
► Compound 1 exhibits properties of the semiconductor.