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Two novel lanthanide(III) organic frameworks based on a biphenyltetracarboxylate ligand: synthesis, structure and magnetic and luminescence properties
Author(s) -
Hao Hongguo,
Wang Yuchen,
Yuan Suxian,
Li Dacheng,
Sun Junshan
Publication year - 2018
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 17
ISSN - 2053-2296
DOI - 10.1107/s205322961800205x
Subject(s) - lanthanide , luminescence , ligand (biochemistry) , materials science , chemistry , nanotechnology , optoelectronics , organic chemistry , ion , biochemistry , receptor
Two new two‐dimensional lanthanide coordination polymers, namely poly[[tetra‐μ 2 ‐acetato‐tetraaquabis(μ 4 ‐biphenyl‐3,3′,5,5′‐tetracarboxylato)tetrakis(dimethylacetamide)tetraterbium(III)] pentahydrate], {[Tb 4 (C 16 H 6 O 8 ) 2 (C 2 H 3 O 2 ) 4 (C 4 H 9 NO) 4 (H 2 O) 4 ]·5H 2 O} n , (1), and poly[[tetra‐μ 2 ‐acetato‐tetraaquabis(μ 5 ‐biphenyl‐3,3′,5,5′‐tetracarboxylato)tetrakis(dimethylacetamide)tetraeuropium(III)] tetrahydrate], {[Eu 4 (C 16 H 6 O 8 ) 2 (C 2 H 3 O 2 ) 4 (C 4 H 9 NO) 4 (H 2 O) 4 ]·4H 2 O} n , (2), have been synthesized from biphenyl‐3,3′,5,5′‐tetracarboxylic acid (H 4 bpt) and Ln(NO 3 ) 3 ·6H 2 O (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 P 2 1 / n space group. The crystal structures are constructed from bpt 4− ligands (as linkers) and {Ln 2 (μ 2 ‐CH 3 COO) 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).