二维配位聚合物[Zn(PDC)(phen)]_n的合成、晶体结构及荧光性质

Synthesis, Crystal Structure and Luminescent Properties of Two-dimensional Coordination Polymer [Zn(PDC)(phen)]_n

合成了锌(II)与3,4-吡啶二羧酸和1,10-邻菲啰啉形成的配位聚合物[Zn(PDC)(phen)]n(1)(H2PDC=3,4-吡啶二羧酸,phen=1,10-邻菲啰啉),对其进行了元素分析、红外光谱和X射线单晶衍射表征,测定了晶体结构.该聚合物属单斜晶系,P2(1)/n空间群,a=0.77136nm,b=1.9757(4)nm,c=1.0680(2)nm,β=95.36(3)°,V=1.6205(6)nm3,Z=4,Dc=1.683Mg/m3,Mr=410.68,F(000)=832,μ=1.55mm-1,最终偏离因子R1=0.0608,wR2=0.0967.该化合物中Zn原子与来自两个PDC的三个羧基氧原子,另外一个PDC的吡啶氮原子,以及phen的两个氮原子配位,形成的ZnN3O3八面体通过PDC桥联形成二维层状网络结构.此外还研究了该聚合物的热性质和荧光性质.

Zinc（Ⅱ） pyridine-3,4-dicarboxylate polymeric complex with phen, [Zn（PDC）（phen）], （H2PDC = pyridine-3,4-dicarboxylic acid, phen=1,10-phenthroline） has been synthesized and characterized by means of elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. It crystallizes in the monoclinic system, space group P2（1）/n with a=0.77136 nm, b= 1.9757（4） nm, c=1.0680（2） nm, f1=95.36（3）°, V= 1.6205（6） nm^3, Z=4, Dc= 1.683 Mg/m3, Mr=410.68, F（000）=832,μ= 1.55 mm^-1 and R1 =0.0608, wR2= 0.0967. The X-ray analysis revealed that the central Zn atom is octahedrally coordinated by three O atoms from two PDC ligands, one N atom from another PDC and two N atoms from phen. The resulting ZnN3O3 octahedron is bridged by PDC, forming a 2D layer net structure. In addition, the thermal and luminescent properties of the title compound were also studied.