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Updated: May 19, 2026

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
Synthesis and properties of the diruthenium(II) complexes with diimine-linked polypyridine bridges
Dong Hwan Kim1, Hwa-Seon Kim, Woong Kyu Jo
1Department of Chemistry Engineering, Sunchon National University, Sunchon, Jeonnam 540-742, Korea.
Abstract:
The diruthenium complexes, [(bpy)2Ru(II)-(bpy-DPDA)-Ru(II)(bpy)2][PF6]4 3, (bpy: 2,2'-bipyridiyl; bpy-DPDA: Bis(2,2'-dipyridylketenylidene)-N,N-1,4-phenylenediamine}, and [(bpy)2Ru(II)-(Dbpy-DPDA)-Ru(II)(bpy)2][PF6]4 4 {Dbpy-DPDA: Bis(2,2'-dipyridyl ketenylidene)-N,N-1,1'-(4,4'-diphenylene)diamine}, were prepared by the reaction of (bpy)2Ru(II)Cl2 with diimine-linked polypyridine bridges. These complexes were characterized by NMR, IR, UV/VIS, PL and cyclic voltammetry. In the 13C-NMR spectra of 3 and 4, the carbon peaks of the Schiff Bases (>C=N-) were shifted to lower fields, and emissions were observed at 689 and 693 nm with quantum yields of 0.004 and 0.006, respectively. The electrochemistry of complexes 3 and 4 showed four-reversible waves (one oxidation wave and three reduction waves). The electrochemically measured band gaps for complexes 3 and 4 were 2.01 and 2.10 eV, respectively.
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