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.
Crystal Structures and Photoluminescence Properties of Two Lanthanide Complexes Constructed by Flexible 1,2-Phenylenediacetic Ligand
摘要:
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-pda2- anions link the LnⅢ 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-pda2- 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.
English
Crystal Structures and Photoluminescence Properties of Two Lanthanide Complexes Constructed by Flexible 1,2-Phenylenediacetic Ligand
Abstract:
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-pda2- anions link the LnⅢ 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-pda2- 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.
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Key words:
- lanthanide(Ⅲ) complexes
- / crystal structures
- / helix
- / solid fluorescence
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