Proton‐Induced Switching of Electron Transfer Pathways in Dendrimer‐Type Tetranuclear RuOs₃ Complexes

Abstract

Protonation and deprotonation of Brönsted basic sites in the tetranuclear RuOs3 complex shown schematically below results in switching between two oxidation patterns A and B. In the deprotonated RuIIIOs 3II complex obtained after one‐electron oxidation, electron transfer from the peripheral OsII atoms to the central RuIII site is induced by the addition of protons. bpy = 2,2′‐bipyridine, — = 2,2′‐bis(benz‐imidazol‐2‐yl)‐4,4′‐bipyridine.

Electrochemical Elucidation of Nano-Functions of Metal Complexes and the Application to Nanodevices

“…3). The change of this RDE voltammogram indicates that the proton-induced intramolecular electron transfer occurred from the peripheral Os II site to the central Ru III moiety 15).…”

Spectral, structural and DFT studies of platinum group metal 3,6-bis(2-pyridyl)-4-phenylpyridazine complexes and their ligand bonding modes

“…The organometallic complexes of g 6 -arene ruthenium [20,21] and g 5 -half-sandwich complexes of rhodium and iridium have attracted considerable current interest as potential anticancer agents (Dyson et al) [14][15][16][17][18][19]22,23]. Another important aspect, especially from the catalytic prospective, is the design of Ru@O functional groups and analogues capable of reversibly accepting multiple electrons and protons within a relatively small potential range [24][25][26]. This capacity to modify the environment in order to induce electronic as well as steric effects gives scope for the design and fabrication of tailored catalysts for specific reactions.…”

Synthesis and DNA Binding of cis-Dichlorobis-benzimdazolebis-(dimethylsulfoxide)ruthenium(II)- hydrate Complexes

“…The imidazole-metal complexes are important in medicine 1 and coordination chemistry 2 . The imidazole and DMSO ligands have been extensively used in many metal complexes 3 .…”

“…Ligand's effect on anticancer property 5 is important and it is essential to design superior complexes in terms of effectiveness compared to that which are already available agent such as cis-platin. The imidazole-metal complexes are important [6][7][8][9] in medicine and coordination chemistry. The spectroscopy of these complexes in the absence and presence of plasmid DNA was examined and compared to cis-platin.…”