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.

DMAX

In the EF routine [7], the starting value for the trust radius is set to n.nn. After the first geometry optimization cycle, DMAX is changed by EF, and can increase by a factor of 2.0 on every cycle. If DMAX is not set, the default of 0.20 is used. (Try to avoid using this keyword.)