含有刚柔混合多羧酸配体的新型稀土配位聚合物[Ce(pydc)(Hglu)]_n的水热合成、结构和性质

Lanthanide Complexes Containing Both Rigid and Flexible as Mixed Ligands [Ce(pydc)(Hglu)]_n:Synthesis,Structure and Property

近年来,设计合成新型的金属-有机配位聚合物受到了人们的青睐,由于它们在结构上的多样性导致了它们在磁性、催化、电子导体等领域具有广泛的潜在应用。因此,在设计合成这些配合物的过程中,金属和配体的选择对其结构性质都会产生很大的影响。其中,在金属选择中,我们发现具有高配位数的稀土元素有助于合成结构新颖的配位聚合物。

A complex [Ce（pydc）（Hglu）]n （H2pydc=2,5-pyridinedicarboxylate acid,H2glu=glutaric acid） was hydro-thermally synthesized. It was characteristic by elemental analysis,IR spectroscopy,and single-crystal X-ray diffraction. The crystal belongs to monoclinic system,space group P21/c. The cell parameters are：a=0.996 59（7） nm,b=1.555 86（11） nm,c=0.864 38（6） nm,β=92.419（10）°,V=1.339（16） nm3,Dc=2.164,Z=4. The structure of the complex reveals that the title complex is an lanthanide Ce complex with both 2,5-pydc and glu as mixed ligands and it is a three-dimensional framework. In the formation of the complex both ligands act as bridging ligands,by the linking of the two ligands,exhibiting a complicated 3D framework containing 1D infinite-Ln-O-Ln-chain structure. In addition,we have investigated the thermal stability. CCDC：759315.