Journal
INORGANIC CHEMISTRY COMMUNICATIONS
Volume 111, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.inoche.2019.107667
Keywords
Coordination; Tetrazole-1-acetic; Lanthanide(III) ions; Magnetism; Luminescence
Categories
Funding
- NSF of China [21661005, 21562002]
- NSF of Jiangxi Province [201810418014, 20171BAB203003, 20172BCB22021]
- Key Laboratory of Jiangxi University for Function of Materials Chemistry
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Five new lanthanide complexes based on tetrazole-l-acetic ligand and 2,2'-bipyridine as auxiliary ligand have been solvothermally synthesized with the formulas [Ln(2)(1-tza)(2)(NO3)(4)(2,2'-bipy)(2)] [Ln = Nd (1), Sm (2), Eu (3), Tb (4), Dy (5), 1-tza = tetrazole 1-acetic and 2,2'-bipy = 2,2'-bipyridine] and structurally characterized by elemental analyses, IR spectra and single-crystal X-ray diffraction. The single-crystal X-ray diffraction data reveal that complexes 1-5 are dinuclear structures constructed by nitrate-O-bridged and mu(1,3) carboxyl groups from 1-tza ligand, in which each nine-coordinated center Ln(III) ion is in a slightly distorted capped square antiprism geometry. The magnetic behaviors of 1-5 have been investigated. The solid-state photoluminescent measurements illustrate that complexes Eu 3 and Tb 4 display the strong fluorescent emissions in the visible region, whereas Nd 1 shows the characteristic near-infrared(NIR) luminescence. In addition, thermogravimetric analysis of Eu 3 is also described.
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