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以氯醌酸二价阴离子为桥联配体的Fe(Ⅲ)-Fe(Ⅲ)和Mn(Ⅱ)-Mn(Ⅱ)双核配合物的合成与磁性
SYNTHESIS AND MAGNETISM OF BINUCLEAR Fc(III)-Fe(III) AND Mn(II )-Mn( II ) COMPLEXES USING THE DIANIONS OF CHLORANILIC ACIDS AS BRIDGING LIGANDS
【摘要】 <正> 基于铁和锰的双核配合物在生物氧化还原过程中的重要作用及在化学的氧化还原过程中可能做为催化剂的应用前景,本文合成了两个新的以氯醌酸二价阴离子为桥联配体的Fe(Ⅲ)双核和Mn(Ⅱ)双核配合物:[Fe2(phen)4(μ-CA)](ClO4)4·2H2O(1)和[Mn2(phen)4(μ-CA)](ClO4)2·3H2O(2)(phen=1,10菲咯啉;CA=氯醌酸二价阴离子)。经元素分析、IR、电子光谱及磁性等测定,对两配合物进行了表征。
【Abstract】 Two new binuclear Fe(III)-Fe(III) and Mn(II )-Mn(II) complexes containing the dianions of chloranilic acids (CA) which act as bridging ligand in the complexes, have been synthesized namely [Fe2(phen)4(u-CA)](ClO4)4 ·2H2O and [Mn2(phen)4(u-CA)](ClO4)2· 3H2O (phen = O-phenanthroline; CA = dianions of chloranilic acids). They have been characterized by elemental analyses, IR, electronic spectra, susceptibility and variable-temperature magnetic susceptibility. The results indicate that there is a antiferromagnetic interaction between metal ions in the complexes at low temperature. The observed data were well fitted to those from a Heisenberg model. The obtained parameters: J= -2.02cm-1, g = 2.25 for Fe(III)-Fe(III) complex; J=-5.45cm-1, g = 2.01 for Mn(II)-Mn(II) complex.
- 【文献出处】 无机化学学报 ,Chinese Journal of Inorganic Chemistry , 编辑部邮箱 ,1992年01期
- 【被引频次】1
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