The excess electron binding energies for the series of AlnF3n+1-(n = 1-5) polynuclear superhalogen anions were calculated at the OVGF/6-311 + G(3df) level. An increase of the electronic stability of the anions is observed for n raising from 1 to 4, whereas its saturation is predicted when the number of central Al atoms achieves 4 (n = 4). The largest value of the excess electron detachment energy (12.40 eV) in the series of AlnF3n+1- (n = 1-5) anions is estimated for Al4F13- species. (C) 2012 Elsevier B. V. All rights reserved.