Synthesis, characterization and properties of lanthanide complexes with different ancillary ligands
| Autor: | Hong-Ling Gao, Ai-Hong Yang, Dong-Fang Wu, Hong-Man Chen, Jian-Zhong Cui, Jian Gou, Li-Hua Zhao |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Lanthanide
010405 organic chemistry Ligand Chemistry Triclinic crystal system 010402 general chemistry 01 natural sciences 0104 chemical sciences Inorganic Chemistry Crystallography Dodecahedron Materials Chemistry Orthorhombic crystal system Physical and Theoretical Chemistry Isostructural Monoclinic crystal system Coordination geometry |
| Zdroj: | Inorganica Chimica Acta. 490:240-245 |
| ISSN: | 0020-1693 |
| DOI: | 10.1016/j.ica.2019.03.030 |
| Popis: | By introducing different ancillary ligands and solvent molecules, four lanthanide complexes [Yb2(L)2(acac)2(CH3OH)2]·CH3OH·H2O (1), [Lu2(L)2(acac)2(CH3OH)2]·2CH3OH (2), [Yb2(L)2(dbm)2(CH3OH)2]·CH3OH (3), and [Lu2(L)2(dbm)2(C2H5OH)2] (4) (where H2L = 2-(hydroxyimino)-2-[(5-methyl-2-hydroxyphenyl)methylene]hydrazide, Hacac = acetylacetonate and Hdbm = 1,3-diphenyl-1,3-propanedione) have been synthesized and characterized. The X-ray structural analyses show that complexes 1 and 2 are isostructural in the Triclinic system, space group Pī, complex 3 crystallizes in Monoclinic system, space group P21/c, and complex 4 crystallizes in Orthorhombic system, space group Pbca. The metal ions in complexes 1–4 are all eight-coordinated and show a similar distorted triangular dodecahedron coordination geometry. The fluorescence properties of complexes 1–4 were also investigated. Complexes 1 and 3 showed characteristic emission peaks of Yb(III) ion, while complexes 2 and 4 exhibited emission peaks consistent with that of the ligand when they were excited at the same wavelength. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect