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Synthesis, Crystal Structures and Magnetic Properties of Two Three-Dimensional Cerium(III) and Erbium(III) Coordination Polymers

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Abstract

Two lanthanide(III) coordination polymers, namely [Ce(pzdc)1.5(H2O)] n (1), [Er(pzdc)(μ2-OH)(H2O)] n ·nH2O (2) (H2pzdc = pyrazine-2,5-dicarboxylic acid), have been hydrothermally synthesized and characterized by single crystal X-ray diffraction and magnetic measurements. Polymer 1 crystallizes in triclinic space group P-1, with a = 6.2875(6), b = 6.7396(6), c = 13.3858(14) Å, α = 82.858(4), β = 83.118(4), γ = 63.452(4)°, V = 502.16(8) Å3, and Z = 2. Polymer 2 crystallizes in monoclinic space group P2(1)/c, with a = 11.706(4), b = 6.151(2), c = 14.063(5) Å, β = 92.255(3), V = 502.16(8) Å3, and Z = 4. Single-crystal X-ray diffraction studies show that compound 1 possess a 3D framework structure consisted of double chains. Compound 2 features a 3D open framework structure with a dinuclear Er(III) secondary building unit. Magnetic studies for complex 1 show stronger antiferromagnetic coupling between the Ce(III) ions.

Graphical Abstract

Two lanthanide(III) coordination polymers, namely [Ce(pzdc)1.5(H2O)]n (1), [Er(pzdc)(μ2-OH)(H2O)]n·nH2O (2), have been hydrothermally synthesized and characterized. Compound 1 possess a 3D framework structure consisted of double chains. Compound 2 features a 3D open framework structure with a dinuclear Er(III) secondary building unit. Magnetic studies for complex 1 show stronger antiferromagnetic coupling between the Ce(III) ions.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (Project No. 20931003) and the program for New Century Excellent Talents in University (NCET-06-0902).

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Authors and Affiliations

  1. Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Lanzhou University, Lanzhou, 730000, China

    Jin-Zhong Gu

  2. School of Chemistry and Biology Engineering, Taiyuan University of Science and Technology, Taiyuan, 030021, China

    Zhu-Qing Gao

  3. College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China

    Jin-Zhong Gu

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  1. Jin-Zhong Gu
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  2. Zhu-Qing Gao
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Correspondence to Jin-Zhong Gu.

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Gu, JZ., Gao, ZQ. Synthesis, Crystal Structures and Magnetic Properties of Two Three-Dimensional Cerium(III) and Erbium(III) Coordination Polymers. J Chem Crystallogr 42, 283–289 (2012). https://doi.org/10.1007/s10870-011-0241-1

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