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A binuclear gadolinium complex of 8-hydroxyquinoline-2-carbaldehyde salicylhydrazone: structural characterisation and photoluminescence properties.
- Source :
-
Research on Chemical Intermediates . Dec2021, Vol. 47 Issue 12, p5119-5133. 15p. - Publication Year :
- 2021
-
Abstract
- A dibasic tetradentate N3O3 Schiff base ligand {(Z)-2-hydroxy-N′-((8-hydroxyquinolin-2-yl)methylene)benzohydrazide}(H3L) and its binuclear phenoxido-bridged gadolinium complex, [Gd2(HL)2(NO3)2(DMF)4], were synthesised. The ligand was characterised by 1H-NMR, ESI-Mass, FT-IR, and UV–visible spectroscopic methods. The gadolinium complex was characterised by FT-IR, UV–visible spectroscopy, and single-crystal X-ray diffraction. The central gadolinium(III) ion is nine-coordinated, with a distorted tri-capped-trigonal-prismatic geometry. The equatorial coordination sites are satisfied by donor atoms such as phenolate oxygen in μ2 bridging modes, quinoline nitrogen, azomethine nitrogen from the 8-hydroxyquinoline-2-carbaldehyde and one carbonyl oxygen of salicyl moiety. In addition, two DMF molecules via their carbonyl oxygens and one nitrate in a bidentate fashion via O1 and O2 in the axial region complete the coordination. The gadolinium ions are separated by a distance of 4.04 Å in the complex. The Photoluminescence properties of the ligand and the gadolinium complex were studied in the solid-state at room temperature. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09226168
- Volume :
- 47
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Research on Chemical Intermediates
- Publication Type :
- Academic Journal
- Accession number :
- 153554383
- Full Text :
- https://doi.org/10.1007/s11164-021-04589-2