Abstract
The reaction of the organic ligand, 4-quinolineacarboxylate (L) with Pr(ClO4)3·6H2O and Dy(ClO4)3·6H2O, leads to the formation of two novel complexes [Pr2(L)6(H2O)4]2H2O 1 and [Dy2(L)6(H2O)4]2H2O 2, which have been characterized by elemental analysis, IR and single-crystal X-ray diffraction analysis (monoclinic system, space group P2(1)/n, with a = 11.805(2), b = 16.645(3), c = 15.367(3) Å, β = 106.78(3)°, V = 2891.1(10) Å3, Z = 4 for 1, monoclinic system, space group P2(1)/n, with a = 11.629(2), b = 16.478(3), c = 5.336(3) Å, β = 105.83°, V = 2827.4(10) Å3, Z = 4). The two isostructure complexes are binuclear and possess an inversion center which is at the midpoint of the linkage of two symmetrical La(III) centers. In two complexes, each metal center adopts nine-coordinated mode coordinated by nine O atoms from two H2O molecules and three carboxyls of three ligands, and L displays three different coordination modes. Hydrogen bonds join the binuclear complexes into 3D networks.
Graphical Abstract
The structures of two binuclear lanthanide [Ln = Pr, Dy] complexes with 4-quinolineacarboxylate were solved by X-ray diffraction analysis, respectively.
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Acknowledgement
This work was supported by the Beijing Municipal Natural Science Foundation (No. 2082004) and the Funding Project for Academic Human Resources Development in Institutions of Higher Learning under the Jurisdiction of Beijing Municipality (PHR 200907105).
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Gao, Q., Xie, YB. & Zhang, CY. Synthesis and Crystal Structures of Two Binuclear Lanthanide [Ln = Pr, Dy] Complexes with 4-Quinolineacarboxylate. J Chem Crystallogr 40, 872–876 (2010). https://doi.org/10.1007/s10870-010-9757-z
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DOI: https://doi.org/10.1007/s10870-010-9757-z