College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, PR China.
Inorg Chem. 2012 Feb 20;51(4):2381-92. doi: 10.1021/ic2023727. Epub 2012 Jan 30.
A sulfonate-carboxylate ligand, 4,8-disulfonyl-2,6-naphthalenedicarboxylic acid (H(4)-DSNDA), and eight new lanthanide coordination polymers {Pr(4)(OH)(4)(DSNDA)(2)(H(2)O)(12)(10)}(n) (1), Ln(H(2)-DSNDA)(0.5)(DSNDA)(0.5)(H(2)O)(5) (Ln = La(2), Nd(3), Sm(4), Eu(5), Gd(6), and Dy(7)), and {Er(H-DSNDA)(H(2)O)(4)}(n) (8) have been synthesized. Detailed crystal structures of these compounds have been investigated. Compound 1 has a 3D framework featuring the unique cubane-shaped [Pr(4)(μ(3)-OH)(4)] clusters and is a binodal 4,8-connected network with (4(16)·6(12))(4(4)·6(2))(2) topology. Compounds 2-7 are isostructural and have 2D layered structures. Compound 8 is also a 2D layer but belongs to different structural types. The luminescence behavior of compound Eu(5) shows that the π-rich aromatic organic ligands efficiently transfer the absorbed light energy to the Eu(III) ions, thus enhancing the overall luminescent properties of compound Eu(5). The magnetic properties of all compounds except for the diamagnetic La(2) compound have been investigated. In addition, elemental analysis, IR spectra, and thermogravimetric analysis of these compounds are also described.
一种磺酸盐-羧酸盐配体，4,8-二磺酰基-2,6-萘二甲酸（H(4)-DSNDA），以及八个新的镧系元素配位聚合物{Pr(4)(OH)(4)(DSNDA)(2)(H(2)O)(12)(10)}(n) (1)，Ln(H(2)-DSNDA)(0.5)(DSNDA)(0.5)(H(2)O)(5) (Ln = La(2)，Nd(3)，Sm(4)，Eu(5)，Gd(6)，和 Dy(7))，和{Er(H-DSNDA)(H(2)O)(4)}(n) (8)已经被合成。这些化合物的详细晶体结构已经被研究过。化合物 1 具有一个独特的立方烷形[Pr(4)(μ(3)-OH)(4)]簇的 3D 骨架，是一个具有(4(16)·6(12))(4(4)·6(2))(2)拓扑结构的双节点 4,8-连接网络。化合物 2-7 是同构的，具有 2D 层状结构。化合物 8 也是一个 2D 层，但属于不同的结构类型。化合物 Eu(5)的发光行为表明，富π的芳香有机配体有效地将吸收的光能传递给 Eu(III)离子，从而增强了化合物 Eu(5)的整体发光性能。除了反磁性的 La(2)化合物之外，所有化合物的磁性性质都已经被研究过。此外，还描述了这些化合物的元素分析、红外光谱和热重分析。
