高等学校化学学报

高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (8): 1391.

• 研究论文 • 上一篇    下一篇

层状K4Ag2Sn3S9·2H2O的溶剂热合成与表征

白音孟和, 纪敏, 刘新, 安永林, 贾翠英, 宁桂铃   

  1. 大连理工大学化学系, 大连116024
  • 收稿日期:2003-12-17 出版日期:2004-08-24 发布日期:2004-08-24
  • 基金资助:

    国家自然科学基金(批准号:20071006)资助

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

BAIYIN Meng-He, JI Min, LIU Xin, AN Yong-Lin, JIA Cui-Ying, NING Gui-Ling   

  1. Department of Chemistry, Dalian University of Technology, Dalian 116024, China
  • Received:2003-12-17 Online:2004-08-24 Published:2004-08-24

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摘要： 用溶剂热法合成了K4Ag2Sn3S9·2H2O,通过单晶X射线衍射、DSC、TG、IR和紫外漫反射光谱等手段对其进行了表征.结果表明,K4Ag2Sn3S9·2H2O属单斜晶系,P21/m空间群,a=0.78071(2)nm,b=2.73508(1)nm,c=1.05008nm,α=90°,β=103.87(6)°,γ=90°,Z=4.其层状结构内具有一维孔道,钾离子分离在层间及层内孔道中.

关键词: 溶剂热合成, K4Ag2Sn3S9·, 2H2O, 层状结构

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

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