Citation:
WANG Hong-Sheng, LI Xue-Feng, XIA Jun. Synthesis, Structure and Near-infrared Photoluminescent Property of a Tetranuclear Er(Ⅲ) Complex[J]. Chinese Journal of Structural Chemistry,
;2015, 34(1): 87-94.
doi:
10.14102/j.cnki.0254-5861.2011-0403
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A tetranuclear erbium complex with pyridine-2,4,6-tricarboxylic acid (H3ptc), [Er4(ptc)4(H2O)18]·6H2O (1), has been synthesized by hydrothermal method. The complex crystallizes in triclinic system, space group P1, with a=7.620(2), b=10.459(3), c=17.418(5)Å, α=92.351(5), β=92.080(5), γ=95.627(4)°, V=1379.1(7)Å3 and Z=2. One Er(Ⅲ) cation is eight-coordinated and the other is nine-coordinated. The complex exhibits characteristic luminescence of erbium cation in near-infrared region upon the excitation of UV-rays. Furthermore, a three-dimensional supramolecular complex was formed by weak hydrogen bonds among the tetranuclear units.
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