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Updated: Sep 16, 2025

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
Published on: July 30, 2017
Efficient Nonlinear Communication between Two Distally Located Metal Centers in NHC-Supported Homobimetallic
Chandra Shekhar Tiwari1, Aditya Dey1, Rajorshi Das2
1Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
None:
A rare nonlinear metal-to-metal communication in homobimetallic Ru- and Rh-complexes featuring mixed 1,2,3- and 1,2,4-triazole-based dicarbene ligands is reported. These unique complexes that feature rare structural motifs, both normal and abnormal N-heterocyclic carbene (NHC) coordination along with orthometalated as well as nonorthometalated moieties within the same molecular framework, were synthesized in a single step utilizing a bis-triazolium salt with a phenyl spacer. Intriguingly, the di-Ru complex shows excellent stability, superior redox activity, and enhanced UV-vis-NIR absorption in its mixed valence and other oxidized states, compared to the homologous di-Rh complex.
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