Inter-Subshell Break in the Lattice Enthalpies of First-Row Transition-Metal Trichlorides
Abstract
Lattice enthalpies of first-row transition-metal trichlorides (MCl3
) are assembled and analysed.
Subtraction of the various ligand-field contributions to these gives a smooth curve through the points for
3d1‒3d10 ions, but leaves a break of about 20 kJ mol‒1 between 3d0 (i.e. 3p6) and 3d1. This value is compared
with that for M3+(aq) and K3
MF6
.
