Lanthanide-based entangled coordination polymers connected by thiophene-2,5-dicarboxylate: solvothermal syntheses, crystal structures, luminescence and magnetic properties

被引:24
|
作者
Yawer, Mohd [1 ]
Kariem, Mukaddus [1 ]
Sood, Puneet [2 ]
Sheikh, Haq Nawaz [1 ]
机构
[1] Univ Jammu, Dept Chem, Baba Sahib Ambedkar Rd, Jammu 180006, India
[2] Indian Inst Technol, Adv Mat Res Ctr, Block A2 Bldg,Kamand Campus, Mandi 175005, Himachal Prades, India
来源
CRYSTENGCOMM | 2016年 / 18卷 / 20期
关键词
METAL-ORGANIC FRAMEWORK; COPPER(II) COMPLEXES; OPTICAL-PROPERTIES; SLOW RELAXATION; NET TOPOLOGY; ACID; TEMPERATURE; LIGANDS; SERIES; TRANSFORMATION;
D O I
10.1039/c6ce00321d
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Nine novel coordination polymers (CPs) with the formulas [M-6(TDA)(9)(DEF)(5)(H2O)(3)](n) [M = Ce (1), Pr (2), Nd (3), Sm (4)], [Eu-4(TDA)(6)(DEF)(3)(H2O)(2)](n) (5), [Gd-2(TDA)(3)(DEF)(2)](n).H2O (6), [Tb-2(TDA)(3)(DEF)(2)](n).0.5H(2)O (7), [Dy-2(TDA)(3)(DEF)(2)](n).H2O (8) and [Yb-2(TDA)(3)(DEF)(2)](n).0.5H(2)O (9) (TDA = 2,5-thiophenedicarboxylate anion and DEF = diethylformamide) have been synthesized at different temperatures in a DEF-H2O solvent system under solvothermal conditions. All the compounds were characterized by single crystal X-ray diffraction analysis (XRD), Fourier transformation vibrational spectroscopy (FT-IR) and thermal analysis (TGA). Structural analyses of CPs 1-4 reveal that the polymers crystallize in the orthorhombic space group Pna2(1) and form 3D frameworks with large volumes 10 378.1(5), 10230.5(5), 10 171.9(5) and 10077.1(11) angstrom(3), respectively. The M(III) ions of CPs 1-4 exhibit nine and eight coordination numbers with diverse geometries. Structural analyses of CPs 5 and 6-9 unveil that the polymers crystallize in the monoclinic system, with space groups P2(1) and P2/c, respectively, forming a 3D network. The TDA ligand exhibits two coordination modes [(kappa(1)-kappa(1))-(kappa(1)-kappa(1))-mu(4) and (kappa(2)-kappa(1)-mu(2))-(kappa(1)-kappa(1))-mu(5)] which interconnect the metal ions to generate 3D novel metalorganic frameworks. The luminescence properties of 4, 5, 7 and 8, and the magnetic properties of 6-8 were investigated.
引用
收藏
页码:3617 / 3634
页数:18
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