J Biol Inorg Chem (2004) 9:807–817

Both the online and the print versions of this article show an error in Table 2 and a missing line in Table 3. The correct tables appear below.

Table 2 Geometries of phosphorane complexes with hydrated Mg2+ binding (Å)
Table 3 Ligand substitution energies (kcal/mol)