Solvothermal Synthesis and Characterization of K4Ag2Sn3S9·2H2O with Layer Structure

Abstract

Abstract: A novel compound K₄Ag₂Sn₃S₉·2H₂O with a layer structure was synthesized by a mild solvothermal route. The compound was characterized by X-ray diffraction,IR and UV-Vis diffusion reflectance spectrometry and DSC-TG techniques. The compound crystallizes in a monoclinic space group P2₁/m with a=0.780 71(2) nm, b=2.735 08(1) nm, c=1.050 08(2) nm, β =103.874(1), V=2.176 82(1) nm³, Z=4. This compound comprises of hollow layers built from adamantane-like anionic clusters [AgSn₃S₉]^5- . Potassium ions and water molecules locate between the layers. The DSC-TG data show that this compound hydrolyzes partially during dehydration,and collapses at 450 ℃ in nitrogen. UV-Vis diffusion reflectance spectrum suggests that the title compound is a semiconductor with an estimated band gap of 2.4 eV.

Key words: Solvothermal synthesis, K₄Ag₂Sn₃S₉·2H₂O, Layer structure

CLC Number:

O613

TrendMD:

BAIYIN Meng-He, JI Min, LIU Xin, AN Yong-Lin, JIA Cui-Ying, NING Gui-Ling . Solvothermal Synthesis and Characterization of K₄Ag₂Sn₃S₉·2H₂O with Layer Structure[J]. Chem. J. Chinese Universities, 2004, 25(8): 1391.

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Solvothermal Synthesis and Characterization of K₄Ag₂Sn₃S₉·2H₂O with Layer Structure

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