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A ytterbium polymer incorporating ethyl-4,5-imidazole-dicarboxylate and formate coligand: Structure, luminescent, and magnetic properties

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Abstract

A new lanthanide-organic coordination polymer incorporating both substituted imdazole dicarboxylate and formate auxiliary ligand, namely {[Yb3(HEimda)4(μ2-HCOO) · 4H2O] · 2H2O} n (I) (H3Eimda = 1H-2-ethyl-4,5-imidazole-dicarboxylic acid), has been prepared and was structurally characterized by elemental analysis, IR and X-ray diffraction. It crystallizes in the monoclinic system, space group of C2/c. The polymer I is built from two dimensional (2D) double decker networks based on the Ln4HEimda4 tetranuclear basic carboxylate as secondary building unit. The extensive hydrogen bonds extend the 2D lamellar network into a 3D supramolecular aggregate. The emission spectrum of polymer I exhibits ligand-to-metal charge-transfer luminescence. Variable-temperature magnetic susceptibility measurement reveals that the end to end bridging fashion of formate group results in the depopulation of the stark levels for a single Yb3+ ion and/or possible antiferromagntic interactions between Yb3+ ions within the carboxylato bridged dinuclear unit.

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Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, 471022, P.R. China

    X. Feng, P. P. Lei, J. J. Shang & L. Y. Wang

  2. College of Chemistry and Pharmacy Engineering, Nanyang Normal University, Nanyang, 473601, P.R. China

    L. Y. Wang

  3. College of Physics and Electronic Information, Luoyang Normal University, Luoyang, 471022, P.R. China

    Y. Zhao

Authors
  1. X. Feng
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  2. Y. Zhao
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  3. P. P. Lei
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  4. J. J. Shang
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  5. L. Y. Wang
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Correspondence to L. Y. Wang.

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Feng, X., Zhao, Y., Lei, P.P. et al. A ytterbium polymer incorporating ethyl-4,5-imidazole-dicarboxylate and formate coligand: Structure, luminescent, and magnetic properties. Russ J Coord Chem 39, 405–410 (2013). https://doi.org/10.1134/S1070328413050023

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  • DOI: https://doi.org/10.1134/S1070328413050023

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