When you burn fuel, doesnt it set of a chain reaction anyway to blow everything up. The only way to minimise the amount of fuel burnt is to burn less fuel, rearranging its structure wont change the volume you burn, it might make the fuel burn more efficiently but there are so many hydrogen and oxygen molecules in there packed together with very strong bonds, the higher the octance the stronger the bonds i believe, that putting them all in uniform structure i dont think will make any difference when we ignite the crap out of them anyway.