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Updated: Jan 12, 2026

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
A tetradentate benzannulated P^N^N^P ligand and its Fe(II) complex: synthesis, characterization, and electrocatalytic
Baldeep K Sidhu1, Amelia Kacperkiewicz1, Jason D Braun1
1Department of Chemistry and the Manitoba Institute for Materials, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba, R3T 2N2, Canada. david.herbert@umanitoba.ca.
Abstract:
Iron complexes supported by phosphine and pyridine-based ligands are widely seen as efficient molecular catalysts for catalytic transformations, but examples of these complexes as molecular electrocatalysts for the hydrogen evolution reaction (HER) are limited. In this work, we present a ligand design based on a 6,6'-fused dimer of a 2,4-substituted (phosphino)phenanthridine (benzo[c]quinoline). Starting from the monomeric P^N precursor, we show how the P^N^N^P dimer can be selectively formed and report the synthesis and characterization of an Fe(II) complex of this unique scaffold. We demonstrate the potential of such frameworks in the electrocatalytic reduction of Brønsted acids in acetonitrile solution.
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