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化学学报
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化学学报 ›› 2001, Vol. 59 ›› Issue (7): 1116-1120. 上一篇    下一篇

研究论文

[Mn3O(O2CC6H5)6(C3H4N2)3]·C6H5CO2·0.5H2O的 合成、晶体结构及磁性质

李君;张逢星;唐宗薰;只启祯   

  1. 西北大学化学系.西安(710069);陕西省物理无机化学重点实验室
  • 发布日期:2001-07-15

Synthesis, crystal structure and properties of trinuclear manganese complex [Mn3O(O2CC6H5)6(C3H4N2)3· C6H5CO2·0.5H2O

Li Jun;Zhang Fengxing;Tang Zongxun;Zhi Qizhen   

  1. Northwest Univ, Dept Chem.Xian(710069)
  • Published:2001-07-15

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Mn(O2CMe)2·4H2O、咪唑、苯甲酸和N(n-Bu)4MnO4在无水乙醇溶剂中反应，制备得到锰的三核μ3-O桥联配位化合物[Mn3O(O2CC6H5)6(C3H4N2)3]·C6H5CO2·0.5H2O.该配位化合物的X射线单晶衍射表明，其属于单斜晶系，空间群P21/C，晶胞参数：a=1.52832(19)nm,b=1.9722(2)nm,c=2.1023(3)nm,β=92.597(3)°,Z=4.变温磁化率(5～280K)研究表明，该配位化合物中3个锰离子在低温下存在弱的反铁磁性耦合，交换积分J=-2.34cm^-1。

关键词: 晶体结构, 锰络合物, 三核络合物, 反铁磁性, 磁化强率, 咪唑P

Trinuclear manganese complex [Mn3O(O2CC6H5)6 (C3H4N2)3·C6H5CO2·0. 5H2O was synthesied. The compound crystallizes in monoclinic space group P21/C with a=1.528 32(19) nm, b=1.9722(2) nm, c=2.102 3(3)nm, β=92.597(3)°,V=6.330 0(13)nm^3, Z=4.In IR spectrum, the broad band (10) is assigned to Vνas(Mn3O), the doubly degenerate in-plane vibration of the central oxygen, Variable temperature (5 to 280K) magnetic susceptibility exibits the expected weak antiferromagnetism, the magnetic susceptibility data for the complex is fit. The fitting parameters is g=2.04, J=-2.34 cm^-1, F=5.3×10^-3.

Key words: CRYSTAL STRUCTURE, MANGANESE COMPLEX, ANTIFERROMAGNETISM, SUSCEPTIBILITY, IMIDAZOLE P

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