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Fluorescent phenoxy benzoxazole complexes of zirconium and hafnium: synthesis, structure and photo-physical behaviour.
- Source :
-
Dalton transactions (Cambridge, England : 2003) [Dalton Trans] 2018 Aug 14; Vol. 47 (32), pp. 11245-11252. - Publication Year :
- 2018
-
Abstract
- A series of ten heteroleptic and homoleptic mononuclear Zr(iv) and Hf(iv) complexes bearing differently substituted phenoxy-benzoxazole ligands was synthesised. The complexes were characterised by 1H and 13C{1H} NMR spectroscopy as well as by elemental analyses and X-ray diffraction experiments. The molecular structures show octahedral or tetragonal-antiprismatic coordination motifs at the metal atom. The crystal packing patterns depend on the substitution of the ligands. The intermolecular interactions in the solid state are governed by weak π-π interactions, and are also dependent on the ligand structure. Photo-physical investigations reveal that all ten complexes show a ligand-centered fluorescence with emission maxima in the blue region of the electromagnetic spectrum.
Details
- Language :
- English
- ISSN :
- 1477-9234
- Volume :
- 47
- Issue :
- 32
- Database :
- MEDLINE
- Journal :
- Dalton transactions (Cambridge, England : 2003)
- Publication Type :
- Academic Journal
- Accession number :
- 30058654
- Full Text :
- https://doi.org/10.1039/c8dt01757c