Citation: ZHANG Mei-Li, CHEN Xiao-Li, WANG Ji-Jiang. Crystal Structures and Photoluminescence Properties of Two Lanthanide Complexes Constructed by Flexible 1,2-Phenylenediacetic Ligand[J]. Chinese Journal of Structural Chemistry, ;2014, 33(6): 935-941. shu

Crystal Structures and Photoluminescence Properties of Two Lanthanide Complexes Constructed by Flexible 1,2-Phenylenediacetic Ligand

1.
Department of Chemistry and Chemical Engineering, Yan'an University, Shaanxi 716000, China

Received Date: 2 January 2014
Available Online: 9 April 2014
Fund Project: This project was supported by the National Natural Science Foundation of China (21373178) (21373178)the Natural Science Foundation of Yanan university (YDZ2013-09) (1238)

Two 3D Ln-organic coordination frameworks (Ln=Pr³⁺ for 1 and Er³⁺ for 2) have been constructed. Single-crystal X-ray diffraction analysis reveals that the two complexes have similar structures and belong to the monoclinic C2/c space group. The trans-μ₄-(η²:η¹)-(η¹:η¹) 1,2-pda^2- anions link the Ln^Ⅲ centers to generate a 2D network containing helical motif. The dimensionality is extended into a 3D architecture through cis-bis(μ₂-η²:η¹) 1,2-pda^2- anions linking. The geometry of Ln³⁺ ions is single-capped anti-square prism. Two complexes were characterized by IR spectra and thermogravimetric analysis. The solid fluorescence of 1 and 2 was also investigated at room temperature.
- lanthanide(Ⅲ) complexes,
- crystal structures,
- helix,
- solid fluorescence
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