Abstract
Formation of 1 : 1 adduct intermediates was detected between peroxomonosulfate ion and tris-(2,2′-bipyridine)iron(II) or tris-(1,10-phenanthroline)iron(II) complexes. The formation equilibrium constants were determined (27 ± 3 and 63 ± 18 (mol L−1)−1) on the basis of kinetic measurements. The adduct was also detected by ESI mass spectrometry with the phenanthroline complex. A mechanism for the oxidation of tris-(2,2′-bipyridine)iron(II) or tris-(1,10-phenanthroline)iron(II) by peroxomonosulfate ion is proposed.
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