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Issue 19, 2017
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Synthesis, characterization and properties of lanthanide coordination polymers with 3,5-bis(4-carboxyphenylmethyloxy) benzoic acid

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Abstract

Two types of coordination polymers based on a flexible tripodal multicarboxylate ligand and lanthanide metal ions, namely, [Ln(L)]·4.5H2O (Ln = La (1), Ce (2), Nd (3), named as type I) and [Ln(L)(H2O)2]·3.5H2O (Ln = Er (4), Tm (5), Yb (6), Lu (7), named as type II) (H3L = 3,5-bis(4-carboxyphenylmethyloxy)benzoic acid), have been hydrothermally synthesized and characterized structurally. Single-crystal X-ray diffraction analyses revealed that compounds 1–3 are isostructural, and they crystallize in the orthorhombic Pbcn space group with a 3D framework. In contrast, isomorphic compounds 4–7 exhibit 2D networks in the monoclinic C2/m space group, and were synthesized under experimental conditions similar to 1–3. The structural diversities reveal that the lanthanide contraction has a significant effect on the structural self-assembly process. The PXRD patterns of the hydrated, dehydrated and rehydrated samples of 5 show that the dehydration–rehydration process of 5 is reversible, based on which the alcohol sorption property of 5 was explored. Magnetic susceptibility studies of 2–5 have been carried out, which indicated a antiferromagnetic interaction. The solid-state luminescent behaviors of 2, 3 and 6 were investigated at room temperature. 3 and 6 exhibit the unique emissions of Nd and Yb, respectively.

Graphical abstract: Synthesis, characterization and properties of lanthanide coordination polymers with 3,5-bis(4-carboxyphenylmethyloxy) benzoic acid

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Publication details

The article was received on 13 May 2017, accepted on 23 Aug 2017 and first published on 23 Aug 2017


Article type: Paper
DOI: 10.1039/C7NJ01650F
Citation: New J. Chem., 2017,41, 11215-11224
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    Synthesis, characterization and properties of lanthanide coordination polymers with 3,5-bis(4-carboxyphenylmethyloxy) benzoic acid

    T. Shi, Y. Chen and X. Ren, New J. Chem., 2017, 41, 11215
    DOI: 10.1039/C7NJ01650F

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