Proton-Induced Dynamic Equilibrium between Cyclometalated Ruthenium rNHC (Remote N-Heterocyclic Carbene) Tautomers with an NAD+/NADH Function
摘要:
Cyclometalated ruthenium(II) complexes having acridine moieties have been synthesized and characterized by spectroscopic methods. Protonation of the acridine nitrogen of the ruthenium(II) complexes not only causes dynamic equilibrium with remote N-heterocyclic carbene Ru=C complexes but also generates the NAD(+)-/NADH redox function driven by a proton-coupled two-electron transfer accompanying a reversible C-H bond formation in the pyridinium ring.
Proton-Induced Dynamic Equilibrium between Cyclometalated Ruthenium rNHC (Remote N-Heterocyclic Carbene) Tautomers with an NAD<sup>+</sup>/NADH Function
Cyclometalated ruthenium(II) complexes having acridine moieties have been synthesized and characterized by spectroscopic methods. Protonation of the acridine nitrogen of the ruthenium(II) complexes not only causes dynamic equilibrium with remote N-heterocyclic carbene Ru=C complexes but also generates the NAD(+)-/NADH redox function driven by a proton-coupled two-electron transfer accompanying a reversible C-H bond formation in the pyridinium ring.
[Ru<sup>V</sup>(NCN-Me)(bpy)(O)]<sup>3+</sup> Mediates efficient C–H bond oxidation from NADH analogs in aqueous media rather than water oxidation
The [RuVO]3+ and [RuVIO]4+ generated from [RuII(NCN-Me)(bpy)(H2O)](PF6)2 play the selective role in C–H bond oxidation of 2-(pyridin-2-yl)-9,10-dihydroacridine (PADHH) and water splitting, respectively, are reported.