草酰二胺桥联异双核Cu（Ⅱ）－Ni（Ⅱ）配合物的合成、光谱和磁性研究

Synthesis,Spectral and Magnetic Studies of μ-Oxamido Heterobinuclear Cu(Ⅱ)-Ni(Ⅱ)Complexes

合成了三种异双核配合物［Ｃｕ（ｏｘａｅ）Ｎｉ（Ｌ）（ＣｌＯ４）２］，其中ｏｘａｅ代表Ｎ，Ｎ’－双（二氨基乙基）草酰胺二价阴离子，Ｌ代表乙二氨（ｅｎ），１，３－丙二氨（ｐｎ）或１，２－丙二氨（ａｐ），基于红外光谱，元素分析和电子光谱，证明这些配合物具有扩展草酰胺桥联结构，并且由在平面配位环境下的铜（Ⅱ）离子和八面体配位环境下的镍（Ⅱ）离子组成。同时测定了配合物的变温磁化率（４．２～３００Ｋ），计算出的Ｊ值表明，三种配合物顺磁离子间存在反铁磁耦合。

Three binuclear complexes have been synthesized,namely [Cu (oxae)Ni( L)(ClO_4)_2], where oxae denotes the N,N’-bis( 2-aminoethyl)oxamide dianion and L denotes di-aminoethane(en ),1,3-diaminopropane(pn)or 1,2-diaminopropane(ap).Based on IR, elemen-tal analyses and electronic spectra, these complexes are proposed to have extended oxamido bridged structures and to consist of the copper(Ⅱ)ion in a square environment and the nickel(Ⅱ)ion in an octahedral environment. Magnetic susceptibilities of the complexes were measured in the 4.2～300 K rangeand the J values(J=-64 to-77cm￣(-1)) thus calculated indicated an anti-ferromagnetic coupling between the two puramagnetic ions in each cases.