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.

STEP1

In a grid calculation the step size in degrees or Ångstroms for the first of the two parameters is given by n.nnn. By default, an 11 by 11 grid is generated. See POINT1 and POINT2 on how to adjust this number. The first point calculated is the supplied geometry, and is in the upper left hand corner. See also STEP2=n.nnn.