Two Three-dimensional Terbium-1,4-benzenedicarboxylate Coordination Polymers: Syntheses, Structures, and Luminescence

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Abstract

Two coordination polymers with 1,4-benzenedicarboxylic acid (H2BDC) ligand, namely, [Tb3(BDC)4.5(H2O)(DMF)2]n (1) and [Tb2(BDC)3(H2O)2(DMF)2]n (2), have been synthesized and characterized. Both compounds crystallize in the triclinic system, space group P . For compound 1, a = 10.8528(5), b = 12.2516(5), c = 16.9031(7) Å, α = 104.462(1), β = 93.659(1), γ = 101.404(1)°, V = 2118.1(2) Å3, Z = 2, C42H34N2O21Tb3, Mr = 1379.47, Dc = 2.163 g/cm3, μ = 5.045 mm-1, F(000) = 1326, the final R = 0.0212 and wR = 0.0570 for 8592 observed reflections with I > 2(I). For compound 2, a = 8.547(1), b = 10.170(1), c = 11.192(1) Å, α = 65.531(1), β = 71.886(1), γ = 78.796(1)°, V = 839.2(2) Å3, Z = 1, C30H30N2O16Tb2, Mr = 992.40, Dc = 1.964 g/cm3, μ = 4.257 mm-1, F(000) = 482, the final R = 0.0220 and wR = 0.0649 for 3626 observed reflections with I > 2(I). The compounds exhibit different structural topologies depending on the nature of templating agents in the reactions though the templating agents are not incorporated in the final solids. Compound 1 exhibits a three-dimensional (3D) framework based on the rod-shaped terbium-carboxylate building blocks constructed from linear trinuclear Tb3 units. Compound 2 has a 3D framework containing two interpenetrating pcu topological networks based on the 6-connected dinuclear Tb2 secondary building units. Photoluminescence studies show both compounds exhibit typical Tb(III) luminescence emissions. An efficient ligand-to-Tb(III) energy transfer is observed in the emission spectra for both compounds.

Key words： terbium coordination compounds luminescence templates 1,4-benzenedicarboxylate

Received: 17 July 2015 Published: 11 April 2016

Fund:Supported by the NNSFC (21361011), the Provincial Natural Science Foundation of Jiangxi (20151BAB203002),
the Project of Education Department of Jiangxi Province (GJJ14235) and the Open Project Program of Key Laboratory
of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University (KLFS-KF-201412)

Corresponding Authors: qyliuchem@jxnu.edu.cn E-mail: qyliuchem@jxnu.edu.cn

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	LEI Qian
	LIU Qing-Yan
	WANG Yu-Ling
	CHEN Li-Li
	YIN Shun-Gao

Cite this article:

LEI Qian,LIU Qing-Yan,WANG Yu-Ling, et al. Two three-dimensional terbium-1, 4-benzenedicarboxylate coordination polymers: Syntheses, structures, and luminescence[J]. CHINESE JOURNAL OF STRUCTURAL CHEMISTRY, 2016, 35(4): 566-576.

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http://manu30.magtech.com.cn/jghx/EN/ OR http://manu30.magtech.com.cn/jghx/EN/Y2016/V35/I4/566

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