An open-framework thiozincogermanate was solvothermally synthesized and characterized by single crystal diffraction. The crystal crystallizes in the tetragonal system, space group I-42d with a=1.106 31(16) nm, c=1.914 6(4) nm, V=2.343 3(7) nm 3, Z=16, D c=1.550 g·cm -3, R= 0.054 2, wR=0.095 7. The structure is composed of supertetrahedron A 4S 4- 10(A=Zn or Ge) linked together by bridging sulfur atoms to produce a cristobalite topology, all Ge atoms are tetrahedrally coordinated, sulfur atoms have 2-coordinations, and Zn atoms replace Ge atoms in the framework. The compound has 1D channels along a (or b) direction with pore sizes of 1.064 nm×0.846 nm. UV-Vis reflectance spectrum show that the compound is a semiconductor with a optical gap of 3.0 eV. TG-DSC results indicate that this open-framework has a good stability in nitrogen.
