Additions and corrections
A density functional study of [M(PH3)2(η2-C2X4)] alkene complexes for the Group 10 metals Ni, Pd, Pt: the effect of electron-attracting substituents
Francesco Nunzi, Antonio Sgamellotti, Nazzareno Re and Carlo Floriani
J. Chem. Soc., Dalton Trans., 1999, 3487. Amendment published 3rd February 2000
The name of the first author is Francesca Nunzi and not Franceso Nunzi.