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化学学报
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化学学报 ›› 2009, Vol. 67 ›› Issue (14): 1705-1708. 上一篇    下一篇

研究简报

混配配合物[Cu(2-mpac)(SCN)(H2O)•H2O]n的合成、结构与磁性研究

王晓玲a,b 范 广a,c 陈三平a 高胜利*,a

  

  1. (a西北大学化学与材料科学学院 合成与天然功能分子化学教育部重点实验室 西安 710069)
    (b西安石油大学化学化工学院 西安 710065)
    (c咸阳师范学院化学与化工学院 咸阳 712000)

  • 投稿日期:2008-10-31 修回日期:2009-01-20 发布日期:2009-07-28
  • 通讯作者: 高胜利

Synthesis, Structure and Magnetism of Mixed-ligand Complex [Cu(2-mpac)(SCN)(H2O)•H2O]n

Wang, Xiaolinga,b Fan, Guanga,c Chen, Sanpinga Gao, Shengli*,a   

  1. (a College of Chemistry & Materials Science, Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
    of Ministry of Education, Xi’an 710069)
    (b College of Chemistry & Chemical Engineering, Xi’an Shiyou University, Xi’an 710065)
    (c College of Chemistry & Chemical Engineering, Xianyang Normal University, Xianyang 712000)
  • Received:2008-10-31 Revised:2009-01-20 Published:2009-07-28
  • Contact: Gao, Shengli

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在水溶液中以Cu(NO3)2•3H2O, 2-mpac和KSCN反应得到了一个通过硫氰酸根桥连的混配配合物[Cu(2-mpac)(SCN)(H2O)•H2O]n (1) (2-mpac: 5-methylpyrazine-2-carboxylic acid), 利用元素分析, 红外光谱, 单晶X射线衍射, X射线粉末衍射以及热重分析对配合物1进行了表征. 晶体学数据: 三斜晶系, P-1空间群, a＝0.5567(2) nm, b＝1.0339(3) nm, c＝1.0532(3) nm, α＝64.030(2)°, β＝77.620(3)°, γ＝85.945(3)°, V＝0.5321(3) nm3, Z＝2, S＝1.061, 最终偏离因子[I＞2σ(I)] R1＝0.0444, wR2＝0.0905, 对于全部数据R1＝0.0647, wR2＝0.0988. 变温磁化率研究表明配合物1中的Cu(II)离子之间存在弱的反铁磁相互作用.

关键词: 混配配合物, 晶体结构, 磁性表征

A mixed-ligand complex [Cu(2-mpac)(SCN)(H2O)•H2O]n (1) (2-mpac＝5-methylpyrazine-2- carboxylic acid) bridged by thiocyanate has been obtained from reaction of Cu(NO3)2•3H2O, 2-mpac and KSCN in aqueous solution and characterized by elemental analysis, IR, single crystal X-ray diffraction, X-ray powder diffraction and thermogravimetric analyses. Crystal data: triclinic, space group P-1, a＝0.5567(2) nm, b＝1.0339(3) nm, c＝1.0532(3) nm, α＝64.030(2)°, β＝77.620(3)°, γ＝85.945(3)°, V＝0.5321(3) nm3, Z＝2, S＝1.061, final R indices [I＞2σ(I)] R1＝0.0444, wR2＝0.0905, and for all reflections R1＝0.0647, wR2＝0.0988. The result of magnetism characterization revealed that weak antiferromagnetic interaction existed between the Cu(II) centers.

Key words: mixed-ligand complex, crystal structure, magnetism characterization