Al-Riyahee, Ali A.A., Horton, Peter N., Coles, Simon J., Amoroso, Angelo J. ![]() ![]() |
Preview |
PDF
- Accepted Post-Print Version
Download (7MB) | Preview |
Abstract
A series of six coordinate homoleptic and heteroleptic Cr(III) complexes have been formed that incorporate 8-quinolinato ligands. Three classes of complex have been synthesised and characterised: (i) [Cr(Q)3]; (ii) [Cr(Q)2(H2O)2]Cl; (iii) [Cr(Q)(N^N)2](PF6)2 (where Q is a ligand, 8-hydroxyquinoline, 8-hydroxy-2-methyl-quinoline, or 8-hydroxy-5-nitroquinoline; N^N = 1,10-phenanthroline or 2,2′-bipyridine). Single crystal X-ray structures were obtained for four complexes giving examples of [Cr(Q)2(H2O)2]Cl, two [Cr(Q)(bipy)2](PF6)2 and [Cr(Q)(phen)2](PF6)2. Each complex shows the ligands in the expected coordination mode with a distorted octahedral geometry evident at the metal centre. The UV–Vis. absorption data allowed assignments of the quinolinato-centred electronic transitions together with a much weaker spin allowed d–d transition (4A2 → 4T2) around 550 nm. Each complex was found to be luminescent in aerated MeCN solution at room temperature, which was attributed to a ligand-centred fluorescence based on the coordinated quinolinato ligand.
Item Type: | Article |
---|---|
Date Type: | Publication |
Status: | Published |
Schools: | Chemistry |
Publisher: | Elsevier |
ISSN: | 0277-5387 |
Date of First Compliant Deposit: | 20 November 2018 |
Date of Acceptance: | 5 October 2018 |
Last Modified: | 06 Nov 2023 18:13 |
URI: | https://orca.cardiff.ac.uk/id/eprint/116946 |
Citation Data
Cited 4 times in Scopus. View in Scopus. Powered By Scopus® Data
Actions (repository staff only)
![]() |
Edit Item |