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Updated: Feb 18, 2026

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
Published on: July 30, 2017
Palladium(0) NHC complexes: a new avenue to highly efficient phosphorescence
Adam F Henwood1, Mathieu Lesieur2, Ashu K Bansal3
1Organic Semiconductor Centre , EaStCHEM School of Chemistry , University of St Andrews , St Andrews , Fife KY16 9ST , UK . Email: eli.zysman-colman@st-andrews.ac.uk ; http://www.zysman-colman.com ; ; Tel: +44-(0)1334-463826.
Abstract:
We report the first examples of highly luminescent di-coordinated Pd(0) complexes. Five complexes of the form [Pd(L)(L')] were synthesized, where L = IPr, SIPr or IPr* NHC ligands and L' = PCy3, or IPr and SIPr NHC ligands. The photophysical properties of these complexes were determined in degassed toluene solution and in the solid state and contrasted to the poorly luminescent reference complex [Pd(IPr)(PPh3)]. Organic light-emitting diodes were successfully fabricated but attained external quantum efficiencies of between 0.3 and 0.7%.
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