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The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
Photodriven Multi-electron Storage in Disubstituted Ru(II) Dppz Analogues
Joseph M Aslan1, David J Boston1, Frederick M MacDonnell2
1Chemistry and Biochemistry Department, The University of Texas at Arlington, 700 Planetarium Place, Arlington, TX 76019 (USA).
Abstract:
Four derivatives of the laminate acceptor ligand dipyrido-[3,2-a:2',3'-c]phenazine (dppz) and their corresponding ruthenium complexes, [Ru(phen)2 (dppzX2 )](2+) , were prepared and characterized by NMR spectroscopy, ESI-MS, and elemental analysis. The new ligands, generically denoted dppzX2 , were symmetrically disubstituted on the distal benzene ring to give 10,13-dibromodppz (dppz-p-Br), 11,12-dibromodppz (dppz-o-Br), 10,13-dicyanodppz (dppz-p-CN), 11,12-dicyanodppz (dppz-o-CN). Solvated ground state MO calculations of the ruthenium complexes reveal that these electron-withdrawing substituents not only lower the LUMO of the dppz ligand (dppz(CN)2
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