# CFOUR_SCF_DAMPING

> Controls the damping (in the first iterations (specified by CFOUR_SCF_EXPSTART via with as the value specified by the keyword. The default value is currently 1000 (no damping), but a value of 500 is recommended in particular for transition metal compounds where the SCF convergence is often troublesome. PSI4 Interface: Keyword subject to translation from value of DAMPING_PERCENTAGE unless set explicitly.

> - Type: integer
> - Default: 1000