Formation of the paramagnetic complex [Cr(OH)5O2]5- in the reaction between chromium(VI) oxide, and hydrogen peroxide or superoxide anion radicals studied by EPR spectroscopy.
Hydrogen peroxide or superoxide anion radicals form a paramagnetic complex in the reaction with chromium(VI) oxide in an alkaline water solution at room temperature. The complex [Cr(OH)5O2]5- with the g-value equal to 1.9734 is believed to contain hydroxyl groups derived from the alkaline solution and dioxygen derived from hydrogen peroxide or superoxide anion radicals.
Lagercrantz
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Department of Medical Biophysics, University of Göteborg, Sweden.
D017608:Chromium Compounds / Q000737:chemistry*; D004578:Electron Spin Resonance Spectroscopy; D005609:Free Radicals / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D066298:In Vitro Techniques; D012996:Solutions; D013481:Superoxides / Q000737:chemistry*; D013696:Temperature; D014867:Water
D017608:Chromium Compounds; D005609:Free Radicals; D012996:Solutions; D014867:Water; D013481:Superoxides; D006861:Hydrogen Peroxide; C023600:chromic oxide