Minimum Energy Crossing Point
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The Minimum Energy Crossing Point (MECP) is the lowest point where two
potential energy surfaces cross. These two potential energy surfaces
can be any two orthogonal states. The situation for different spin
states is implemented in the GUI, which takes the current state and
the next spin state, e.g. singlet and triplet. This can be used to
find the most likely location for a spin forbidden chemical reaction.
SCM gratefully acknowledges Professor Jeremy Harvey for the initial
MECP code.

The model menu in AMSinput has the option to calculate the MECP. The
same convergence criteria as for ADF is used for the MECP
optimization.
