Solvothermal synthesis and structures of lanthanide-organic sandwich coordination polymers with 4,4′-biphenyldicarboxylic acid

First examples of lanthanide coordination polymers with 4,4′-biphenyldicarboxylic acid (4,4′-H 2bpdc), Ln(4,4′-Hbpdc)(4,4′-bpdc)(H 2O) 2 (Ln=Pr(1), Eu( 2), Gd( 3)) and Er(4,4′-bpdc) 1.5(H 2O) 2 ( 4) were prepared by the solvothermal synthesis. Crystallographic data show that complexes 1– 3 are isost...

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Bibliographic Details
Published in:Journal of molecular structure 2004-11, Vol.705 (1), p.21-27
Main Authors: Wang, Yi-Bo, Zhuang, Wen-Juan, Jin, Lin-Pei, Lu, Shao-Zhe
Format: Article
Language:English
Subjects:
Coordination mode
Coordination polymers
Lanthanide
Solvothermal synthesis
X-ray diffraction
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Summary:First examples of lanthanide coordination polymers with 4,4′-biphenyldicarboxylic acid (4,4′-H 2bpdc), Ln(4,4′-Hbpdc)(4,4′-bpdc)(H 2O) 2 (Ln=Pr(1), Eu( 2), Gd( 3)) and Er(4,4′-bpdc) 1.5(H 2O) 2 ( 4) were prepared by the solvothermal synthesis. Crystallographic data show that complexes 1– 3 are isostructural and each lanthanide(III) ion is coordinated to six 4,4′-Hbpdc ligands, and display 3D sandwich structure with lanthanide ion layers and organic ligand layers alternately linking up with each other. Complex 4 shows different coordination modes of 4,4′-bpdc ligands from 1– 3 and each Er(III) ion is attached to four 4,4′-bpdc ligands to construct 3D sandwich structure. The emission spectrum of 2 shows one Eu 3+ ion site, which is consistent with the results of the X-ray crystal structure analysis.
ISSN:0022-2860
1872-8014
DOI:10.1016/j.molstruc.2004.04.007