# How does crystal field stabilisation energy relate to the stability of a complex?

I know how the crystal field stabilization energy is calculated, but how does it reflect stability? CFSE measures the energy relative to the barycentre, not the initial energy of the $d$ orbitals. For example,a $d^5$ configuration in a weak ligand field would have zero CFSE, but that certainly does not mean that the complex is unstable.

• You nailed it, and there is not much left to add. – Jan Sep 27 '15 at 0:21
• @Jan So it doesn't relate to stability? – Tony Stark Jan 12 at 13:05