Solvothermal Synthesis and Characterization of an Open-framework Thiozincogermanate with a Cristobalite Topology

Abstract

Abstract: 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) nm³, Z=16, D_c=1.550 g·cm^-3, R= 0.054 2, wR=0.095 7. The structure is composed of supertetrahedron A₄S₁₀^4- (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.

Key words: Thiozincogermanate, Crystal structure, Open-framework, Thermal Stability, Semiconductor

CLC Number:

O613

TrendMD:

ZHU Yang-Chun, YE Ling, BAIYIN Meng-He, LIU Xin, AN Yong-Lin . Solvothermal Synthesis and Characterization of an Open-framework Thiozincogermanate with a Cristobalite Topology[J]. Chem. J. Chinese Universities, 2004, 25(12): 2224.

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Solvothermal Synthesis and Characterization of an Open-framework Thiozincogermanate with a Cristobalite Topology

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