Hao Hongguo, Wang Yuchen, Yuan Suxian, Li Dacheng, Sun Junshan
Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, People's Republic of China.
College of Chemistry and Chemical Engineering, Taishan University, Taian 271000, Shandong Province, People's Republic of China.
Acta Crystallogr C Struct Chem. 2018 Mar 1;74(Pt 3):386-391. doi: 10.1107/S205322961800205X. Epub 2018 Feb 28.
Two new two-dimensional lanthanide coordination polymers, namely poly[[tetra-μ-acetato-tetraaquabis(μ-biphenyl-3,3',5,5'-tetracarboxylato)tetrakis(dimethylacetamide)tetraterbium(III)] pentahydrate], {[Tb(CHO)(CHO)(CHNO)(HO)]·5HO}, (1), and poly[[tetra-μ-acetato-tetraaquabis(μ-biphenyl-3,3',5,5'-tetracarboxylato)tetrakis(dimethylacetamide)tetraeuropium(III)] tetrahydrate], {[Eu(CHO)(CHO)(CHNO)(HO)]·4HO}, (2), have been synthesized from biphenyl-3,3',5,5'-tetracarboxylic acid (Hbpt) and Ln(NO)·6HO (Ln = Tb and Eu) under solvothermal conditions. Single-crystal X-ray structure analysis shows that the two compounds are isostructural and crystallize in the monoclinic P2/n space group. The crystal structures are constructed from bpt ligands (as linkers) and {Ln(μ-CHCOO)} building units (as nodes), which topological analysis shows to be a (4,6)-connected network with sql topology. Compounds (1) and (2) have been characterized by elemental analysis, IR spectroscopy, powder X-ray diffraction (PXRD), thermogravimetric analysis (TGA) and fluorescence analysis in the solid state. In addition, a magnetic investigation shows the presence of antiferromagnetic interactions in compound (1).
两种新型二维镧系配位聚合物，即聚[[四-μ-乙酸根-四水双(μ-联苯-3,3',5,5'-四羧酸根)四(二甲基乙酰胺)四铽(III)]五水合物]，{[Tb(CHO)(CHO)(CHNO)(HO)]·5HO}，(1)，以及聚[[四-μ-乙酸根-四水双(μ-联苯-3,3',5,5'-四羧酸根)四(二甲基乙酰胺)四铕(III)]四水合物]，{[Eu(CHO)(CHO)(CHNO)(HO)]·4HO}，(2)，已在溶剂热条件下由联苯-3,3',5,5'-四羧酸(Hbpt)和Ln(NO)·6HO (Ln = Tb和Eu)合成。单晶X射线结构分析表明这两种化合物同构，且结晶于单斜P2/n空间群。晶体结构由bpt配体（作为连接体）和{Ln(μ-CHCOO)}构筑单元（作为节点）构建而成，拓扑分析表明其为具有sql拓扑的(4,6)-连接网络。化合物(1)和(2)已通过元素分析、红外光谱、粉末X射线衍射(PXRD)、热重分析(TGA)以及固态荧光分析进行了表征。此外，磁性研究表明化合物(1)中存在反铁磁相互作用。
