Binding of carbon dioxide to cobalt and nickel tetra-aza macrocycles
- 1 January 1986
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 9,p. 697-699
- https://doi.org/10.1039/c39860000697
Abstract
Cyclic voltammetry of cobalt and nickel complexes of the macrocycle 5,7,7,12,14,14-hexamethyl-1,4,8,11-tetra-azacyclotetradeca-4,11-diene in 0.10M tetraethylammonium perchlorate in dimethyl sulphoxide in the presence of carbon dioxide shows a strong positive shift of the CoII/I reduction potential, leading to an equilibrium constant of 7 × 104 for CO2 binding, whereas the nickel complex shows a very low affinity for CO2 binding in either the NiII or NiI oxidation states.Keywords
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