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.

OLDENS

A density matrix produced by an earlier run of MOPAC is to be used to start the current calculation. This can be used in attempts to obtain an SCF when a previous calculation ended successfully but a subsequent run failed to achieve an SCF.

The density matrix contains information on the electron density distribution only.  It does not contain any information on the geometry.

The opposite of OLDENS is `DENOUT <denout.html>`__

See also `RESTART <restart.html>`__.