Oxidizing agents manganese compounds

Fused potassium nitrate is a powerful oxidising agent (cf. the oxidation of manganese compounds, p.. IS6 ... 

N- Aminoaziridines have been converted to alkenes by reaction with a variety of oxidizing agents (70JA1784). Usually, the deamination reaction is stereospecific. The oxidation of l-amino-2,3-diphenylaziridines with manganese dioxide, however, was not stereospecific. The trans compound gives entirely frans-stilbene, whereas the cfs-aziridine forms a mixture of 85% trans- and 15% c -aikene. cw-Stilbene is not isomerized to trans under the reaction conditions, and the results are explained in terms of an azamine intermediate which can isomerize through a tautomeric equilibrium. 

One other important compound of manganese is potassium permanganate, KMnO . This is an intensely violet-colored material much used as an oxidizing agent in the laboratory. (It is too expensive to use on a large scale in industry, chlorine is more likely to be used.)... 

A substance which results in the chemical inactivation of a metal. The catalytic effect of heavy metals, mainly copper and manganese, on the oxidation of unsaturated compounds such as rubber, results in very rapid deterioration. Chelating agents convert the metal into a chelate co-ordination compound and thus render the metal inactive. The term sequestering agents has been applied to chelating agents but this infers that the metal has been removed and not merely inactivated. 

Arndt, D. "Manganese Compounds as Oxidizing Agents in Organic Chemistry" Open Court La Salle, Illinois, 1981 Chapter 5. 

Manganous(ll) sulfate is a reducing agent. Treatment with oxidizing agents can yield manganese compounds in a higher oxidation state. 

Manganese(III) is a strong oxidizing agent and is subject to disproportionation as well. Complexes of Mn(III) are also relatively unstable with the exception of [Mn(CN)6]3, which forms readily upon exposure of a solution of manganese(II) and cyanide to air. A few iron(IV) compounds are known. 

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