Benzannulated Re(i)–NHC complexes: synthesis, photophysical properties and antimicrobial activity. Issue 44 (25th October 2017)

• Record Type: Journal Article
• Authors: Siegmund, Daniel; Lorenz, Nicole; Gothe, Yvonne; Spies, Christian; Geissler, Bastian; Prochnow, Pascal; Nuernberger, Patrick; Bandow, Julia E.; Metzler-Nolte, Nils
• Is Part Of: Dalton transactions. Volume 46:Issue 44(2017)
• Page Start: 15269
• Page End: 15279
• Publication Date: 2017-10-25
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c7dt02874a
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : A series of novel Re(i )(CO)3 –NHC complexes bearing unsubstituted benzimidazol-2-ylidene ligands is presented which provide strong luminescence as well as high antibacterial activity. Abstract : A series of novel Re(i )(CO)3 –NHC complexes bearing unsubstituted benzimidazol-2-ylidene ligands as well as a variety of bisimine ligands has been prepared and comprehensively characterised. The complexes were found to exhibit potent antimicrobial activity on Gram-positive bacterial strains in the low micromolar concentration range, rendering these compounds interesting lead structures for the development of novel metal-based antibiotic agents. Further, the complexes exhibit pronounced luminescence with large Stokes shifts in acetonitrile and water at ambient temperature. The photophysical properties including luminescence lifetimes and quantum yields are consistent with emission from 3 MLCT (d(Re) → π*(bisimine)) states.