【摘要】 草酸铽与水合环己烷六酸(H6LⅠ.H2O)(顺式椅式构型LⅠ:a,e,a,e,a,e)在水热条件下反应生成一种新颖的三维稀土配位聚合物[Tb4(LⅡ)(ox)3(H2O)8](LⅡ为反式椅式构型:e,e,e,e,e,e;ox为草酸根),通过元素分析和红外光谱对这个配位聚合物进行了表征。X射线单晶衍射分析表明该配合物属于三斜晶系,P1空间群,晶胞参数为:a=0.60203(4)nm,b=1.08278(8)nm,c=1.29446(9)nm,α=67.908 0(10)°,β=82.109 0(10)°,γ=83.887 0(10)°,V=0.773 07(9)nm3,Z=2。在这个配合物的形成中,顺式构型的H6LⅠ配体发生构型转变形成LⅡ配体,LⅡ配体采取μ8-桥连模式将Tb离子连接成一个具有孔洞的二维(Tb-LⅡ)配位层。由μ2-和μ4-桥连模式构成的一维(Tb-ox)链将二维(Tb-LⅡ)层连接成一个具有孔道的三维配位框架,ox配体和水分子通过配位作用和氢键作用填充在孔道中。更多还原

【Abstract】 Reaction of Tb2(ox)3·6H2O and cyclohexane-1,2,3,4,5,6-hexacarboxylic acid hydrate(H6LⅠ·H2O)(cis-chair conformation LⅠ: a,e,a,e,a,e) resulted in formation of a novel three-dimensional lanthanide coordination polymer [Tb4(LⅡ)(ox)3(H2O)8](trans-chair conformation LⅡ: e,e,e,e,e,e;ox: oxalate) under hydrothermal condition,which was characterized by elemental analysis and IR.X-ray diffraction crystal structure analysis shows that the complex crystallizes in triclinic system,space group P1 with a=0.602 03(4) nm,b=1.082 78(8) nm,c=1.294 46(9) nm,α=67.908 0(10)°,β=82.109 0(10)°,γ=83.887 0(10)°,V=0.773 07(9) nm3,Z=2.In the formation of the complex,the cis-chair H6LⅠ ligand transformed to the trans-chair LⅡ ligand,which adopts μ8-bridging mode connecting the Tb atoms to form two-dimensional(Tb-LⅡ) layers with channels.The one-dimensional(Tb-ox) chains bridged by μ2-and μ4-ox ligands link the(Tb-LⅡ) layers to generate a three-dimensional framework with channels,which were filled with ox ligands and water molecules through coordination and hydrogen interactions.CCDC: 790926.更多还原