Synthesis, structures and luminescent behaviour of tridentate salicylaldiminato-type borate complexes

Christou, Victor; Watkins, Scott E.; McCann, Ruth; Redshaw, Carl; Elsegood, Mark R.J.

Abstract

Treatment of the ligands 3,5-tBu2-2-(OH)C6H2CHNR [R = 2-(CO2H)C6H4 (1a) and 2-(CO2H)C10H6 (1b)] with trimethylborate, B(OMe)3, in toluene yields, after work-up, the yellow crystalline complexes {[3,5-tBu2-2-(O)C6H2CHNR]B(OMe)} [R = 2-(CO2)C6H4 (2a) and 2-(CO2)C10H6 (2b)], respectively. Further treatment of these complexes with trifluoromethanesulfonic (triflic) acid, CF3SO3H, followed by recrystallisation from tetrahydrofuran (thf) afforded the triflate salts [{3,5-tBu2-2-(O)C6H2CHNR}B(thf)][CF3SO3] [R = 2-(CO2)C6H4 (3a) and 2-(CO2)C10H6 (3b)]. An electroluminescent device was constructed using 2a, which produced orange-green light with broad emission spectra (maximum brightness of 5 cd/m2 being observed at 13 V). Compounds 1a and 2b·2MeCN have been characterised by single crystal X-ray structure determinations.

Citation

Christou, V., Watkins, S. E., McCann, R., Redshaw, C., & Elsegood, M. R. (2010). Synthesis, structures and luminescent behaviour of tridentate salicylaldiminato-type borate complexes. Inorganica Chimica Acta, 363(6), 1173-1178. https://doi.org/10.1016/j.ica.2009.11.006

• Journal Article Type: Article
• Acceptance Date: Nov 8, 2009
• Online Publication Date: Nov 16, 2009
• Publication Date: Apr 5, 2010
• Deposit Date: Jun 8, 2022
• Journal: Inorganica Chimica Acta
• Print ISSN: 0020-1693
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 363
• Issue: 6
• Pages: 1173-1178
• DOI: https://doi.org/10.1016/j.ica.2009.11.006
• Public URL: https://hull-repository.worktribe.com/output/3622493