应用化学 ›› 2009, Vol. 26 ›› Issue (6): 686-691.

• 研究论文 • 上一篇    下一篇

两种蓝矾衍生物的合成、结构及光谱性质研究

邓圣军,张宁,,,,陈超   

  1. 江西省南昌大学化学系
  • 收稿日期:2008-04-29 修回日期:2008-07-04 出版日期:2009-06-10 发布日期:2009-06-10
  • 通讯作者: 张宁

Solvothermal Synthesis, Structures and Spectroscopic Properties of Two Chalcanthite Derivatives

  • Received:2008-04-29 Revised:2008-07-04 Published:2009-06-10 Online:2009-06-10

摘要:

溶剂热体系下采用咪唑(im)、2,2’-联吡啶(bpy)为配体与硫酸铜合成了2种蓝矾衍生物:[Cu(im)4SO4]n (1)和[Cu(bpy)(H2O)2SO4]n (2),产率分别为67%和82%。重点考察了体系酸度对结构形成的影响,体系中加入的硝酸量分别控制在0.35–0.6 mmol和1.2–1.45 mmol时,得到纯相的1和2。通过元素分析、红外光谱、热重、电感耦合等离子体发射光谱、粉末X射线衍射及X射线单晶衍射测试技术对其结构及性质进行了表征。晶体结构解析表明,化合物1和2均属单斜晶系,C2/C空间群,具有蓝矾结构特征,但由于配体的空阻效应,1呈一维“之”字链状结构,2为一维“一”字链。通过紫外-可见漫反射对其性质进行了测试,结果表明2个化合物在近紫外区有一定的红移,可见光区发生蓝移。

关键词: 蓝矾衍生物, 硫酸铜, 溶剂热合成, 紫外-可见光谱, 蓝矾衍生物, 硫酸铜, 溶剂热合成, 紫外-可见光谱

Abstract:

Two compounds, [Cu(im)4SO4]n (1) and [Cu(bpy)(H2O)2SO4]n (2) (im = imidazole, bpy = 2,2’-bipyridine), were synthesized under solvothermal condition in 67% and 82% yields, respectively. The relation between crystal structure and acidity of synthesis system were investigated. As 0.35–0.6 mmol and 1.2–1.45 mmol HNO3 were added to reaction system, respectively, pure 1 and 2 were obtained. And they were further characterized by elemental analysis, IR, Uv-vis reflection spectra, inductively coupled plasma(ICP), TGA, powder X-ray diffraction and X-ray crystallography diffraction. The crystal structure analyses reveal that they all belong to the monoclinic system with space group C2/C, possessing chalcanthite-like configuration. Compound 1 exhibits a 1D zigzag chain structure, while 2 being 1D linear chain, which is resulted from different ligands. The shifts of peak absorption in Uv-vis spectroscopy of compounds compared with imidazole and bipyridine indicates that the center ion interact with ligands.

Key words: chalcanthite, copper sulfate, solvothermal synthesis, Uv-vis spectroscopy