Synthesis,Crystal Structures and Magnetic Properties of Two Three-Dimensional Cerium(III) and Erbium(III) Coordination Polymers |
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| Authors: | Jin-Zhong Gu Zhu-Qing Gao |
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| Institution: | (1) Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Lanzhou University, Lanzhou, 730000, China;(2) School of Chemistry and Biology Engineering, Taiyuan University of Science and Technology, Taiyuan, 030021, China;(3) College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China |
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| Abstract: | 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. |
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