N,N'-双(2-氨基丙基)草酰胺合铜(II)的铜(II)-锰(II)配合物的合成和磁性

合成和表征了两种新的异双核配合物Cu(oxap)Mn(L)~2](ClO~4)~2, oxap表示N,N'-双(2-氨基丙基)草酰胺根阴离子, L表示1,10-邻菲咯啉(phen)和5-硝基-1,10-邻菲咯啉(NO~2-phen)。测定了配合物的变温磁化率(4.2-300K), 并用最小二乘法和从自旋Hamiltonian算符, ^^H=-2J^^S~1.^^S~2-D^^S~Z~1导出的磁方程拟合。求得交换积分为J=-74.72cm^-^1(phen)和J=-76.39cm^-^1(No~2-phen), 表明两个Cu(II)-Mn(II)双核配合物中有中等强度的反铁磁超交换作用。

Synthesis and Magnetism of copper(II)-Manganese(II) complexes with N, N'-Bis(2-aminopropyl)oxamidocopper(II)

Cu(oxap)MnL2](ClO4)2 (I) are synthesized and characterized, (H2oxap = N,N'-bis(2-aminopropyl)oxamide; L 1,10-phenanthroline (phen) or 5-nitro-1,10-phenanthroline (NO2-phen)). Variable-temp. (4.2-300 K) magnetic susceptibility measurements were recorded for I. The exchange integral, J, is -74.72 cm-1 for Cu(oxap)Mn(phen)2](ClO4)2, and -76.39 cm-1 for Cu(oxap)Mn(NO2-phen)2](ClO4)2, indicating that a moderately strong antiferromagnetic superexchange interaction operates between the metal ions.