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A Series of Lanthanide-organic Frameworks Constructed by Ln4(OH)4 Clusters and Mixed Ligands |
GU Xiang-Yu;JIN Cong-Cong;CHENG Jian-Wen |
Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua, Zhejiang 321004, China |
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Abstract Three new lanthanide-organic compounds, namely, [Ln2(OH)2(oba)(2-pc)2]n (Ln = Er (1), Ho (2), and Dy (3)) (oba = 4,4΄-oxybis(benzoate), 2-pc = 2-pyrazinecarboxylic acid) have been obtained under hydrothermal conditions. These compounds are isostructural and exhibit 2D layered structures by incorporating [Ln4(μ3-OH)4]8+ clusters and the mixed linkers of oba and 2-pc. It is interesting that decarboxylation occurred in the ortho position and 2,3-pyrazinedicarboxylic acid was partially transformed into 2-pc under hydrothermal conditions. Compound 3 emits a typical Dy3+ emission spectrum. Furthermore, the PXRD, TGA and IR spectra were also studied.
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Received: 21 March 2018
Published: 08 January 2019
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Fund:Supported by the NNSFC (21471130) |
Corresponding Authors:
jwcheng@zjnu.cn
E-mail: jwcheng@zjnu.cn
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