1D配合物[Tb(3,5-pdc)(3,5-Hpdc)(H_2O)(phen)]_n的合成、晶体结构及发光性质

Synthesis,Structure and Luminescent Property of 1D Complex [Tb(3,5-pdc)(3,5-Hpdc)(H_2O)(phen)]_n

用硝酸铽与3,5-吡啶二甲酸、邻菲罗啉在水热条件下进行反应,合成了配合物[Tb(3,5-pdc)(3,5-Hpdc)(H2O)(phen)]n(3,5-H2pdc=3,5-吡啶二甲酸,phen=1,10-邻菲罗啉)。单晶X射线衍射测试表明,该配合物属单斜晶系,C2/c空间群,晶胞参数分别为:a=2.734 9(3)nm,b=1.099 48(12)nm,c=2.200 0(3)nm,α=γ=90°,β=132.147 3(12)°,Z=8,V=4 904.8(10)nm3。配合物中Tb3+与配体3,5-pdc2-和3,5-Hpdc-交替连接形成了一维链结构,链与链之间通过邻菲罗啉芳香环的π…π堆积弱相互作用形成了三维结构。在波长为352 nm的紫外光激发下,配合物发射出Tb3+的特征荧光。

A terbium complex [Tb(3,5-pdc)(3,5-Hpdc)(H2O)(phen) ]n(3,5-H2 pdc = 3,5-pyridinedicarboxylic acid,phen = 1,10-phenanthroline) was synthesized by reacting terbium nitrate with 3,5-H2 pdc and phen at hydrothermal condition. X-ray diffraction analysis of single crystal shows that the complex is crystallized in monoclinic system,C2/c space group. The cell parameters are as follows: a = 2. 734 9(3) nm,b = 1. 099 48(12) nm,c = 2. 200 0(3) nm,β = 132. 147 3(12) °,α = γ = 90°,Z = 8,V = 4. 904 8(10) nm3. One-dimensional chain structure is constructed by alternated connection between Tb3+ ions and 3,5-pyridinedicarboxylates for the complex. A threedimensional coordination polymer is formed by the π … π stacking interaction between the phen ligands. The complex exhibits intense characteristic luminescence of Tb3+ ion under 352 nm excitation.