Complementary and Non-Complementary Reactions
Complementary Reactions: -
Electron transfer reactions in which the oxidant gains the same number of electrons as the
reductant loses.
or
Redox reactions in which the oxidant and reductant change their oxidation states by an equal
number of units
1. Iron Cyanide Complexes
The reaction is the exchange of electrons between hexacyanoferrate(II) and
hexacyanoferrate(III).
[Fe(CN)6]4-: The iron has an oxidation state of +2.