在水热条件下,合成了一种La3+的三维配位聚合物{ [La(pta) (H2O)2]·H2O}n(H3pta=2,4,6-吡啶三甲酸),得到该配合物的无色块状晶体,对其进行了元素分析和红外光谱测试.X射线单晶衍射分析表明,La3+与八个氧原子和一个氮原子配位.其中六个氧原子来白pta阴离子的羧基氧原子,两个来自配位水分子;氮原子来自吡啶环.该配合物的晶体属单斜晶系,P21/c空间群,晶胞参数为:a=0.68636(14) nm,b=1.1979(2)nm,c=1.3651(3) nm,α=γ=90°,β=99.65(3)°,Z=4,V=1.1065(4) nm3.
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