and hydroxides containing Mn(III) and Mn(IV) can oxidize organic ligands more rapidly than O2. Aromatic The complex interactions of oxidizable organic ligands with soil and nonaromatic ligands have been reported to dissolve Mn(III,IV) (hydr)oxide minerals have received little study by in situ spectroscopic techniques. We used a combination of an in situ electron reductively Mn(III,IV) (hydr)oxi...