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Electrochemical and spectroelectrochemical studies of complexes of 1,10-phenanthroline-5,6-dione |
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| Authors: | Damien M Murphy Patricia Richardson Richard EP Winpenny |
| Institution: | a EaStCHEM, School of Chemistry, The University of Edinburgh, West Mains Road, Edinburgh EH9 3JJ, UK b School of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, UK c School of Chemistry, Cardiff University, Park Place, Cardiff CF10 3AT, UK |
| Abstract: | Electrochemical and spectroelectrochemical (UV-Vis, IR, EPR) of pd (pd = 1,10-phenanthroline-5,6-dione), Pt(N,N′-pd)Cl2, Pd(N,N′-pd)Cl2, Ru(bpy)2(N,N′-pd)]Cl2 (bpy = 2,2′-bipyridine) and Pt(O,O′-pd)(PPh3)2, where N,N′ and O,O′ refers to coordination of pd to the metal centre via N and O atoms, respectively, reveals that the electron transfer processes between +0.5 and −1.25 V all occur at the pd ligand in agreement with DFT calculations. The two CO groups carry a significant amount of the negative charge in mono-reduced pd1−. The mode of coordination of pd has a greater influence on its redox chemistry than the metal centre or the ancillary ligands. |
| Keywords: | 1 10-Phenanthroline Electrochemistry EPR spectroelectrochemistry DFT calculations |
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