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化学学报
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化学学报 ›› 1996, Vol. 54 ›› Issue (4): 363-367. 上一篇    下一篇

研究论文

具有非正规自旋态结构的新型Mn(Ⅱ)-Cu(Ⅱ)-Mn(Ⅱ)三核配合物的合成和磁性

缪明明;廖代正;姜宗慧;王耕霖   

  1. 南开大学化学系
  • 发布日期:1996-04-15

Synthesis and magnetism of new Mn(Ⅱ)-Cu(Ⅱ)-Mn(Ⅱ) trinuclear complexes with irregular state structure

MIAO MINGMING;LIAO DAIZHENG;JIANG ZONGHUI;WANG GENGLIN   

  • Published:1996-04-15

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合成和表征了四种新的异三核配合物, {[Mn(L)2]2[Cu(bpa)]{(ClO4)2,其中pba表示为亚丙基-1, 3-双(草胺酸根); L表示1, 10-菲咯啉(phen)、5-硝基-1, 10-菲咯啉(NO2-phen)、2, 2'-联吡啶(bpy)、4, 4'-二甲基-2, 2'-联吡啶(Me2bpy)。基于{[Mn(phen)2]2[Cu(pba)]}(ClO4)2.H2O的变温磁化率测量(4.2~300K), 求出交换积分J=41.5cm^-^1, 表明Mn(Ⅱ)和Cu(Ⅱ)离子间为反铁磁耦合。在XMT-T图上, XMT在175K附近呈现出一极小值, 这是具有非正规自旋态结构的多金属耦合体系的典型特征。

关键词: 铜络合物, 多核络合物, 二氮杂菲 P, 磁性, 锰络合物, 联吡啶 P

Four new heterotrinuclear complexes have been synthesized, namely {[Mn(L)2]2[Cu(pba)]}(ClO4)2 where pba denotes propylene-1, 3-bis (oxamato) and L states for 1, 10-phenanthroline (phen), 5-nitro-1, 10- phenanthroline (NO2-phen), 2, 2'-bipyridyl (bpy), 4, 4'-dimethyl-2, 2' -bipyridyl (Me2bpy). The temperature depedence of the magnetic susceptibility of {[Mn(phen)2]2[Cu(pba)]}(ClO4)2.H2O has been studied in the 4.2~300K range, giving the exchange integral J=-41.5cm^-^1. The XMT vs. T Plot exhibits a minimum at about 175K, which is the characteristic of this kind of coupled polymetallic complex with an irregular spin state structure.

Key words: COPPER COMPLEX, POLYNUCLEAR COMPLEX, PHENANTHROLINE P, MAGNETISM, MANGANESE COMPLEX, BIPYRIDINE P

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