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Updated: Feb 20, 2026

Photogeneration of N-Heterocyclic Carbenes: Application in Photoinduced Ring-Opening Metathesis Polymerization
Published on: November 29, 2018
Benzannulated Re(i)-NHC complexes: synthesis, photophysical properties and antimicrobial activity
Daniel Siegmund1, Nicole Lorenz, Yvonne Gothe
1Inorganic Chemistry I, Bioinorganic Chemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany. Nils.Metzler-Nolte@rub.de.
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 3MLCT (d(Re) → π*(bisimine)) states.
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