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化学学报
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化学学报 ›› 1994, Vol. 52 ›› Issue (2): 171-175. 上一篇    下一篇

研究论文

具有铁磁偶合的新型草酸根桥联Cu(Ⅱ)-Cr(Ⅲ)-Cu(Ⅱ)三核配合物

廖代正;石娟;姜宗慧;阎世平;王耕霖   

  1. 南开大学化学系
  • 发布日期:1994-02-15

Ferromagenetic oxalate-bridged trinuclear Cu(Ⅱ)-Cr(Ⅲ)-Cu(Ⅱ) complexes

LIAO DAIZHENG;SHI JUAN;JIANG ZONGHUI;YAN SHIPING;WANG GENGLIN   

  • Published:1994-02-15

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546

合成和表征了两种新的异三核配合物,[Cu~2(phen)~2Cr(OX)~3NO~3]和[Cu~2(Mebpy)~2Cr(OX)~3]NO~3(phen表示1,10-邻菲咯啉,Mebpy表示4,4'-二甲基-2,2-联吡啶,OX表示草酸根阴离子).基于变温磁化率测量(4.2～300K)和自旋哈密顿算符H=-2J(S~C~u~1·S~C~r+S~C~u~2·S~C~r)已推出交换积分J=35.18cm^-^1(Mebpy) 和J=30.24cm^-^1(phen),表明配合物中Cu(Ⅱ)和Cr(Ⅲ)离子间为铁磁偶合

关键词: 铜络合物, 草酸根络合物, 二氮杂菲 P, 联吡啶 P, 铬络合物, 三核络合物, 铁磁体

Oxalate-bridged [Cu2(phen)2Cr(OX)3]NO3 and [Cu2(Mebpy)2Cr(OX)3]NO3 (H2OX = oxalic acid, phen = 1,10-phenanthroline, Mebpy = 4,4-dimethyl-2,2-bipyridyl) were prepared and characterized. The temperature dependence of magnetic susceptibilities of complexes was studied in 4.2-300 K range, and the exchange integral Jcu-Cr is 35.18 cm-1 for [Cu2(Mebpy)2Cr(OX)3]NO3 and 30.24 cm-1 for [Cu2(phen)2Cr(OX)3]NO3 on the base of spin Hamiltonian H = -2J (SCu1譙Cr + SCu2譙Cr). The results are commensurate with ferromagnetic interactions between the Cu(II) and Cr(III) ions.

Key words: COPPER COMPLEX, OXALATO COMPLEX, PHENANTHROLINE P, BIPYRIDINE P, CHROMIUM COMPLEX

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