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合成了两个新的稀土双核配合物Gd_2(bpy)_2(CA)_3·8H_2O和Er_2(bpy)_2(CA)_3·4H_2O,bpy和CA分别代表2,2’-联吡啶和氯醌酸的二价阴离子。已测定其变温磁化率。其数值用最小二乘法与理论方程拟合,求得J=-1.9cm~(-1),表明配合物中Gd(Ⅲ)离子之间存在极弱的反铁磁相互作用。
Two novel rare earth binuclear complexes Gd_2 (bpy) _2 (CA) _3 · 8H_2O and Er_2 (bpy) _2 (CA) _3 · 4H_2O were synthesized. Bpy and CA represent 2,2’-dipyridyl and chloroquinic acid Of dianion. Its temperature-dependent magnetic susceptibility has been determined. The values were fitted by the least square method and the theoretical equation to obtain J = -1.9cm -1, indicating that there was a very weak antiferromagnetic interaction between the Gd (Ⅲ) ions in the complex.