高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (11): 1671.

• 论文 • 上一篇    下一篇

两种具有氢键网络的Ni(Ⅱ)-咪唑配合物的晶体结构和磁性

牛淑云1, 杨忠志1, 杨清传2, 侯云燕3, 杨光第3, 卜为民3   

  1. 1. 辽宁师范大学化学系, 大连 116029;
    2. 北京大学化学与分子工程学院, 北京 100871;
    3. 吉林大学理论化学研究所, 长春 130023
  • 收稿日期:1999-01-08 出版日期:1999-11-24 发布日期:1999-11-24
  • 通讯作者: 牛淑云,女,57岁,教授.
  • 作者简介:牛淑云,女,57岁,教授.
  • 基金资助:

    国家自然科学基金(批准号:59572039);辽宁省自然科学基金

Crystal Structures and Magnetisms of Two Ni(im) Complexes Having Hydrogen-Bonded Networks

NIU Shu-Yun1, YANG Zhong-Zhi1, YANG Qing-Chuan2, HOU Yun-Yan3, YANG Guang-Di3, BU Wei-Min3   

  1. 1. Department of Chemistry, Liaoning Normal University, Dalian 116029, China;
    2. College of Chemistry and Molecular Engineering, Peking University, Beijing 10087, China;
    3. Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China
  • Received:1999-01-08 Online:1999-11-24 Published:1999-11-24

摘要: 合成了两种配合物晶体[Ni(im)6](NO3)(OH)(H2O)4(Ⅰ)和[Ni(im)4(H2O)2][C6H4(COO)2](Ⅱ)(im=C3H4N2).晶体结构测定表明,晶体(Ⅰ)属于六方晶系,空间群P63/m,a=0.8985(10)nm,c=2.1002(4)nm,V=1.4685(4)nm3,Z=2,R=0.043,Rw=0.045.晶体(Ⅱ)属单斜晶系,空间群C2/c,a=2.2207(4)nm,b=0.7665(2)nm,c=1.6043(3)nm,β=120.60(3)°,V=2.3503(9)nm3,Z=4,R=0.056,Rw=0.079.两种配合物在结构上的突出特点是通过氢键形成了三维无限伸展的氢键电荷传递体系,对分子间电子传递有调节和促进作用,从而对晶体的磁性质产生了一定影响。

关键词: Ni(im)配合物, 氢键网络, 晶体结构, 磁性质

Abstract: The crystals of two complexes [Ni(im)6](NO3)(OH)(H2O)4(Ⅰ) and [Ni(im)4(H2O)2][C6H4(COO)2] (Ⅱ) were synthesized. The structures of single crystals were determined by X-ray diffraction. The crystal (Ⅰ) is of hexagonal system, space group P63/m with a=0.8985(10)nm, c=2.1002(4) nm, V=1.4685(4)nm3, Z=2, R=0.043, Rw=0.045.The crystal(Ⅱ) is monoclinic system, space group C2/c with a=2.2207(4) nm, b=0.7665(2) nm, c=1.6043(3) nm, β=120.60(3)°, V=2.3503(9) nm3, Z=4, R=0.056, Rw=0.079. The prominent feature of these two complexes is that they have various hydrogen bondings and thereby possess infinite three-dimensional networks. This not only increa-ses the crystal structure stability but also forms hydrogen bonded charged-transfer system, which modulates and promotes the electron transfer between the molecules. The temperature dependence of the magnetic susceptibility was measured and discussed.

Key words: Ni(im)complex, Hydrogen-bonded network, Crystal structure, Magnetism

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