具有双螺旋链结构的3-吡啶丙烯酸镝配合物的水热合成及晶体结构

Hydrothermal synthesis and crystal structure of dysprosium(Ⅲ)complex featuring double helixes based on 3-pyridine acrylic acid

采用水热法制备了一种新型稀土配位聚合物[Dy(3-PA)3(H2O)]n(3-PA=3-吡啶丙烯酸)(1),并通过X射线单晶衍射结构分析、元素分析、红外光谱、热重分析对配合物1进行了结构表征.结构分析表明,标题配合物属于三斜晶系,Pī空间群,晶胞参数为:a=0.617 16(5)nm,b=1.270 45(11)nm,c=1.564 03(13)nm,α=111.557 0(10)°,β=90.307 0(10)°,γ=95.342 0(10)°,V=1.134 54(16)nm3,Z=2.金属离子Dy(III)通过配体3-AP羧基的桥联作用,链接成为一维双螺旋链状配位聚合物.

A new rare-earth coordination polymer [Dy（3-PA）3（H2O）]n（1） （3-PA is 3-pyridine acrylic acid） was synthesized under hydrothermal condition, and characterized by single crystal X-ray diffraction technique, elemental analysis, IR spectrum and TG analysis. Structural analy- sis shows that complex 1 crystallizes in the triclinic crystal system, Pi space group with crystal cell parameters, a =0.617 16（5）nm, b = 1.270 45（11） nm, c = 1.564 03（13） nm, a=111.557 0（10）°, β= 90.307 0（10）β, y = 95.342 0（10）β, V = 1.134 54（16） nm3, and Z = 2. Complex 1 exhibits a coordination polymer with one-dimension chain-like structure from the dysprosium （Ⅲ） ions bridged by the carboxyl groups of 3-pyridine acrylic acid.