Note

This website is presently under development. The primary website for MOPAC is still http://openmopac.net until the majority of its contents have been migrated here.

DDMAX

The maximum value of the trust radius in EF and TS is set to n.nn. The largest geometry change on any cycle is DDMAX. Use this keyword to limit the rate of change of the geometry. If DDMAX is not set, a default of 0.3 is used in TS, and 0.5 is used in EF.