Journal
CRYSTENGCOMM
Volume 16, Issue 9, Pages 1777-1785Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ce42197j
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Funding
- Natural Science Foundation of China [21071100]
- Doctor Scientific Startup Foundation of Liaoning Province [20111046]
- Distinguished Professor Project of Liaoning province
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A family of lanthanide-organic frameworks, {Ln(2)(pyip)(ox)(2.5)(H2O)(5)}(n) (Ln = La (1), Pr (2), Sm (3), Eu (4), Gd (5), Tb (6), Dy (7)) has been synthesized based on mixed bridging ligands, H(2)pyip and oxalate anion (H(2)pyip = 5-(4-pyridyl)-isophthalic acid, H(2)ox = oxalic acid) and characterized by elemental analysis, Fourier transform infrared spectroscopy, steady state and time-resolved luminescence spectroscopy, thermogravimetric analysis, powder X-ray diffraction and single-crystal X-ray diffraction. The single-crystal X-ray diffraction analysis results show that complexes 1-7 are isostructural. They crystallize in the same P2(1)/c space group and exhibit a (3,4)-connected {4(2).6.8(2).10}{8(2).10} topology, being a 2-nodal net topology. The luminescence properties of 3, 4, 6, and 7 were investigated and related to the structural properties. The magnetic studies reveal that strong ferromagnetic coupling exists in compound 6.
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