草酰二胺桥联异双核Cu（Ⅱ）－CO（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)-Co(Ⅱ) Complexes

合成了三种异双核配合物［Ｃｕ（ｏｘａｅ）Ｃｏ（Ｌ）（ＣｌＯ４）２］，其中ｏｘａｅ代表Ｎ，ＮＣ＇－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的草酰胺桥桥联结构，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，配合物顺磁离子间存在反铁磁耦合。

Three binuclear complexes have been synthesized, namely [Cu (oxae ) Co (L)(ClO4),2], where oxae denotes the N, N' -bis (2-aminoethyl) oxamide dianion and L denotes diaminoethane(en), 1, 3-diaminopropane(pn) or 1, 2-diaminopropane(ap). Based on IR,elemental 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 envilonment and the cobalt(Ⅱ) ion in an octahedral environment. Magnetic susceptibilities of the complexes were measured in the 4. 2￣ 300 K range and the J values (J=- 42 to -61 cm-1 ) thus calculated indicated an antiferromagnetic coupling between the two paramagnetic ions.