Control of intramolecular electron transfer by a chemical reaction. The 4,4'-azopyridine/1,2-bis(4-pyridyl)hydrazine system

doi:10.1021/IC00005A029

Paper

Control of intramolecular electron transfer by a chemical reaction. The 4,4'-azopyridine/1,2-bis(4-pyridyl)hydrazine system

Published Mar 1, 1991 · J. Launay, Myriam. Tourrel-Pagis, J. Lipskier

Inorganic Chemistry

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73

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0

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Abstract

The complexation of 4,4'-azopyridine by the pentaammineruthenium(II) group is described. The metal sites are coordinated to the pyridyl nitrogen atoms and interact through the conjugated azo linkage. Upon oxidation, an intervalence absorption is detected, but it is unresolved with respect to the nearby metal-to-ligand charge-transfer band. The acidification of the binuclear pentaammineruthenium(II) complex gives rise to a pH induced intramolecular redox reaction yielding a ruthenium(III) complex of the reduced form of 4,4'-azopyridine, i.e. 1,2-bis(4-pyridyl) hydrazine

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The complexation of 4,4'-azopyridine by pentaammineruthenium(II) leads to a pH-induced intramolecular redox reaction, allowing for control of intramolecular electron transfer.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

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Control of intramolecular electron transfer by a chemical reaction. The 4,4'-azopyridine/1,2-bis(4-pyridyl)hydrazine system

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