A series of trans-heteroleptic paddlewheel-type diruthenium(II,II) complexes [Ru2(2,6-(CF3)2PhCO2)2(p-RPhCO2)2(THF)2] was synthesized by substituting para-R-substituted benzoate ligands (p-RPhCO2−, R = CF3, Cl, F, H, Ph, Me, MeO, OH) in [Ru2(p-RPhCO2)4(THF)2] with 2,6-bis(trifluoromethyl)benzoate… Click to show full abstract
A series of trans-heteroleptic paddlewheel-type diruthenium(II,II) complexes [Ru2(2,6-(CF3)2PhCO2)2(p-RPhCO2)2(THF)2] was synthesized by substituting para-R-substituted benzoate ligands (p-RPhCO2−, R = CF3, Cl, F, H, Ph, Me, MeO, OH) in [Ru2(p-RPhCO2)4(THF)2] with 2,6-bis(trifluoromethyl)benzoate (2,6-(CF3)2PhCO2−). The redox potential (E1/2) for the [Ru2II,II]/[Ru2II,III]+ couple and the HOMO energy level were linearly dependent on the acidity (pKa) of the substituted benzoic acids (p-RPhCO2H) and Hammett constants of p-R substitution groups.
Journal Title: Chemistry Letters
Year Published: 2018
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