1. Four two-dimensional lanthanide(III)-4,4-biphenyldicarboxylate complexes: Syntheses, structures, magnetic and luminescent properties.
- Author
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Lu, Ying-Bing, Jin, Shuang, Zhu, Shui-Dong, Zhang, Shi-Yong, Lou, Guo-Tian, and Xie, Yong-Rong
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RARE earth metals , *BIPHENYL compounds , *CARBOXYLATES , *CHEMICAL synthesis , *CHEMICAL structure , *LUMINESCENCE , *COORDINATION polymers ,MAGNETIC properties of complex compounds - Abstract
Four novel Ln-bpdc coordination polymers [Ln(bpdc)(NO 3 )(DMA) 2 ] [Ln = La( 1 ), Pr( 2 ), Sm( 3 ), Eu( 4 )] [Ln = lanthanide, H 2 bpdc = 4,4-biphenyldicarboxylate acid and DMA = dimethylacetamide] have been solvothermally synthesized and structurally characterized by elemental analyses, IR spectra and single-crystal X-ray diffraction. 1 – 4 crystallize in the monoclinic space group P 2 1 / c and show a 2-D layer constructed from 1-D Ln–organic chain and tetradentate bpdc 2 − ligand. The magnetic behavior of 2 – 4 has been investigated. The solid-state photoluminescent measurement illustrates that Eu( 4 ) displays the strong fluorescent emissions, which demonstrate that π -rich aromatic organic bpdc 2 − ligands can efficiently transfer energy to the Eu III ions. In addition, thermogravimetric analysis of Pr( 2 ) is also described. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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