通过水热法合成了2种新的配合物[Nd(oba)(Hoba)(H2O)2]·H2O(1)和Sm(oba)(Hoba)(phen)(2)(H2oba=4,4'-氧联苯二甲酸,phen=1,10-邻菲哕啉).X射线单晶衍射分析表明,2种配合物均属单斜晶系,C2/c空间群.配合物1的晶胞参数为:a=2.736 80(5)nm,b=0.956 35(2)nm,c=2.170 93(4)nm,β=97.6850(10)°,V=5.63012(19)nm3,Z=8,F(000)=2 854,R(int)=0.0226.配合物1中4,4'-氧联苯二甲酸根存在2种形式:完全脱质子的4,4'-氧联苯二甲酸根(oba)和部分脱质子的4,4'-氧联苯二甲酸根(Hoba).配体oba和Hoba桥联相邻Nd3+离子形成具有新颖{42·6}{42·6·84·102}{4}拓扑结构的2D网.每个Nd3+离子与8个0原子配位,其中6个0原子来自配体oba和Hoba的羧基,另外2个0原子来自2个配位水.Hoba和配位水、Hoba和Hoba间形成了氢键,将2D网络进一步构筑成了3D超分子结构.配合物2的晶胞参数为:a=1.35260(5)nm,b=1.93686(6)nm,c=2.728 59(8)nm,β=99.867(2)°,V=7.0426(4)nm3,Z=8,F(000)=3 368,R(int)=0.0394.配合物2中4,4'-氧联苯二甲酸根同样存在oba和Hoba 2种形式,相邻Sm3+离子通过羧基COO-桥联形成二聚单元,二聚单元通过oba配体桥联形成1D链结构.每个Sm3+离子与6个来自配体oba和Hoba的羧基0原子以及phen的N原子配位.配体Hoba的羧基间形成的氢键将1D链连接成2D网,通过phen分子间π-π作用进一步构筑成3D超分子结构.配合物1的紫外-可见光谱表明,在510～538 nm和566～600 nm处有2个吸收带,分别对应中心Nd3+的4I9/2→4G7/2+4G9/2+2K13/2和4I9/2→4G5/2+4G7/2特征跃迁;配合物2的荧光光谱表现出Sm3+离子的4G5/2→6H5/2、4G5/2→6H7/2和4G5/2→6H9/2特征跃迁.
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