a redox disproportionation is a reaction in which the reactant gets oxidized and reduced simultaneously, to yield two products.
example: cannizzarro rxn.
the aldehyde gets oxidized to and acid, and reduced to an alcohol.
A number of inorganic compounds disp when heated. these are generally compounds in which one element is in an intermediate oxidation state, ie, an oxidation state that is neither its highest possible, nor its lowest possible.
example:
Cu2I2--------> Cu + CuI2