In plots relating rate constants to charges in standard Gibbs energy (\(\Delta G^{\,\unicode{x26ac}}\)) for @E02011@ a region may occur in which the rate constants decrease as the exergonicity of the reaction increases. This region is often referred to as the inverted region and its presence is predicted by the theory developed for @O04351@ for the case \(-\Delta G^{\,\unicode{x26ac}} > \lambda \) in the @M03702@, \(\lambda\) being the @R05292@. Note the similarity to the energy gap law for radiationless conversion of an @E02257@.