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Two Novel lanthanide(III) Organic Frameworks Based on a Biphenyltetracarboxylate Ligand: Synthesis, Structure and Magnetic and Luminescence Properties

Two Novel lanthanide(III) Organic Frameworks Based on a Biphenyltetracarboxylate Ligand: Synthesis, Structure and Magnetic and Luminescence Properties

Hongguo Hao, Yuchen Wang, Suxian Yuan, Dacheng Li, Junshan Sun

Acta Crystallogr C Struct Chem. 2018 Mar 1;74(Pt 3):386-391.

PMID: 29504570

Abstract:

Two new two-dimensional lanthanide coordination polymers, namely poly[[tetra-μ2-acetato-tetraaquabis(μ4-biphenyl-3,3',5,5'-tetracarboxylato)tetrakis(dimethylacetamide)tetraterbium(III)] pentahydrate], {[Tb4(C16H6O8)2(C2H3O2)4(C4H9NO)4(H2O)4]·5H2O}n, (1), and poly[[tetra-μ2-acetato-tetraaquabis(μ5-biphenyl-3,3',5,5'-tetracarboxylato)tetrakis(dimethylacetamide)tetraeuropium(III)] tetrahydrate], {[Eu4(C16H6O8)2(C2H3O2)4(C4H9NO)4(H2O)4]·4H2O}n, (2), have been synthesized from biphenyl-3,3',5,5'-tetracarboxylic acid (H4bpt) and Ln(NO3)3·6H2O (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 P21/n space group. The crystal structures are constructed from bpt4- ligands (as linkers) and {Ln2(μ2-CH3COO)2} 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).

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP4371282	Biphenyl-3,3′,5,5′-tetracarboxylic acid		4371-28-2	Price

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