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One-dimensional lanthanide complexes bridged by nitronyl nitroxide radical ligands with non-chelating nitrogen donors: Structure and magnetic characterization

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  • Special Topic · Molecular Magnetism
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Abstract

A series of new lanthanide-radical complexes [{Ln(hfac)3}2(NITPhIM)2] (Ln = Nd (1), Eu (2), Tb (3), Er (4); hfac = hexafluoroacetylacetonate; NITPhIM = 2-[4-(1-imidazole)phenyl]-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) have been prepared and characterized. Single crystal X-ray diffraction analyses reveal that these complexes are isostructural with one-dimensional chain structures. These consist in Ln(hfac)3 units bridged by the paramagnetic ligands by the means of coordination of their nitronyl nitroxide groups and imidazole rings. Interestingly, each Ln ion is either bound to two nitronyl nitroxide groups or to two imidazole units, and the different Ln centers alternate along the chain. Magnetic studies show that complex 3 exhibits a single-chain magnet behavior.

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Authors and Affiliations

  1. Key Laboratory of Advanced Energy Materials Chemistry, Department of Chemistry, Nankai University, Tianjin, 300071, China

    RuiNa Liu, Peng Hu, LiCun Li & DaiZheng Liao

  2. Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry, Nankai University, Tianjin, 300071, China

    LiCun Li

  3. UPS, INPT; LCC, Université de Toulouse, F-31077, Toulouse, France

    Jean-Pascal Sutter

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  1. RuiNa Liu
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  2. Peng Hu
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  3. LiCun Li
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  4. DaiZheng Liao
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  5. Jean-Pascal Sutter
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Correspondence to LiCun Li.

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Liu, R., Hu, P., Li, L. et al. One-dimensional lanthanide complexes bridged by nitronyl nitroxide radical ligands with non-chelating nitrogen donors: Structure and magnetic characterization. Sci. China Chem. 55, 997–1003 (2012). https://doi.org/10.1007/s11426-012-4580-3

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  • DOI: https://doi.org/10.1007/s11426-012-4580-3

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