oxygen in acetonitrile byproducts: {C6H5CH2Co(2,2'-bipyridine)2}(2+); one-electron oxidn. of cis-Co complex by (Fe(phen)3)(3+) in presence of O2 at 298 K; monitored by (1)H-NMR;

in water Kinetics; study of the oscillatory reaction at 40°C with stirring; concentration of Fe(phen)3(3+) is monitored spectrophotometrically;