Calculation of molecular electrostatic potentials and Fukui functions using density functional methods

The performance of different density functional methods in the calculation of molecular electrostatic potentials and Fukui functions, i.e. two reactivity indices based on the electron density, is investigated. It turns out, as a whole, that the exact exchange functionals B3LYP and B3PW91 yield results close to accurate electron correlation methods if basis sets of sufficient quality are used.