...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Zeitschrift fur Naturforschung, B. A Journal of Chemical Sciences >Synthesis, crystal structure and magnetic properties of a (mu-hydroxo)(mu-pyrazolato) dicopper(II) complex
【24h】

Synthesis, crystal structure and magnetic properties of a (mu-hydroxo)(mu-pyrazolato) dicopper(II) complex

机译：（mu-hydroxo）（mu-pyrazolato）dicopper（II）配合物的合成，晶体结构和磁性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Preparation and magnetic properties of a 3,5-dimethylpyrazolate bridged binuclear copper(II) complex [Cu-2(L)(3,5-pyz)] (L = 1,3-Bis(2-Hydroxy-5-Chlorosalicylideneamino)propan- 2-ol) is reported. The crystal structure determined by X-ray diffraction methods. (C22H20N4O3Cl2CU2), triclinic, space group P (1) over bar, a = 9.622(3), b = 10.921(2), c = 11.420(3) Angstrom, alpha = 100.73(2), beta = 94.04(2), gamma = 108.08(2)degrees V = 1110.2(5)Angstrom(3), Z = 2. TWO copper(II) ions in a square-planar coordination are bridged via alkoxide oxygen and 3,5-dimethyl pyrozolate nitrogen atoms to form a dinuclear unit. The metal coordination sphere is four-coordinate, planar with an N2O2 donor set. The dihedral angle between the two coordination planes is 166.83 degrees. There are significant intermolecular interactions between neighbouring binuclear entities. The shortest intermolecular Cu(1)... Cu(1)(i) distance is 3.383(1) Angstrom and the Cu(1) - O(1)(i) distance is 2.666(3) Angstrom (i = 1-x, -y, 1-z). The variable-temperature magnetic susceptibility measurement for a powdered sample of the complex was carried out in the temperature range 5 - 350 K and analysed to obtain values of the parameter J in the exchange Hamiltonian H = -2JS(Cu). S-Cu; 2J = -164 cm(-1). The magnetic moment at 300 K is about 2.42 mu(B), and 0.22 mu(B) at 5 K. The weak antiferromagnetism of the present complex is reasonably explained in terms of the orbital countercomplementary effect based on Hoffmann's theory for super-exchange interaction. [References: 36]
机译：3,5-二甲基吡唑酸酯桥联双核铜（II）配合物[Cu-2（L）（3,5-pyz）]（L = 1,3-Bis（2-Hydroxy-5-Chlorosalicylideneaminoamino）的制备和磁性丙-2-醇）的报道。通过X射线衍射法确定晶体结构。 （C22H20N4O3Cl2CU2），三斜线，条形上的空间群P（1），a = 9.622（3），b = 10.921（2），c = 11.420（3）埃，alpha = 100.73（2），beta = 94.04（2） ，伽玛= 108.08（2）度V = 1110.2（5）埃（3），Z =2。在平面平面配位中的两个铜（II）离子通过烷氧基氧和3,5-二甲基吡唑酸酯氮原子桥接到形成双核单位。金属配位球是四个坐标的平面，带有N2O2供体组。两个协调平面之间的二面角为166.83度。相邻的双核实体之间存在重要的分子间相互作用。分子间最短的Cu（1）... Cu（1）（i）距离为3.383（1）埃，Cu（1）-O（1）（i）距离为2.666（3）埃（i = 1- x，-y，1-z）。在5-350 K的温度范围内对复合物粉末样品进行变温磁化率测量，并进行分析以获得交换哈密顿量H = -2JS（Cu）中的参数J值。铜2J = -164厘米（-1）。 300 K时的磁矩约为2.42 mu（B），5 K时的磁矩约为0.22 mu（B）。基于Hoffmann超交换相互作用理论的轨道反互补效应，可以合理地解释本复合物的弱反铁磁性。 。 [参考：36]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号