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Eu(III) and Tb(III) complexes of 1,3-bis(4-chlorophenyl)-1,3-propanedione combined with phenanthroline ligand: synthesis, structural characterization, and thermogravimetric studies

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β-Diketone lanthanide complexes are used mainly in lighting, telecommunication, screens, safety inks, and marking as well as in the field of luminescent materials for probes in biosciences. Two new lanthanide ternary complexes, the general formula Eu(BCPP)3(Phen) and Tb(BCPP)3(Phen), combined 1,3-bis(4-chlorophenyl)-1,3-propanedione (BCPP) with 1,10-phenanthroline as a secondary ligand, were synthesized and structurally characterized by single crystal X-ray diffraction, elemental analysis, FT-IR, and MALDI-TOF MS. Single crystal X-ray diffraction analysis revealed that these Eu(III) and Tb(III) complexes displayed bidentate ligands and a square antiprism geometry for the metal center. Also, the absorption and thermal behavior of these lanthanide complexes were investigated. When the maximum absorption of the lanthanide complexes was compared, it was observed that the absorption wavelength of the lanthanide complexes were red shifted in DMSO, DMF, and DCM, depending on the polarity of the solvent.
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Keywords: crystal structure; lanthanide; phenanthroline; β-Diketone

Document Type: Research Article

Affiliations: 1: Department of Chemistry, Faculty of Arts and Sciences, Gaziantep University, Gaziantep, Turkey; 2: Department of Physics, Faculty of Arts and Sciences, Harran University, Şanlıurfa, Turkey; 3: Department of Medical Services and Techniques, Vocational High School of Health Services, Giresun University, Giresun, Turkey; 4: Department of Physics, Faculty of Arts and Sciences, Dokuz Eylül University, Buca, Izmir, Turkey

Publication date: April 3, 2019

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