
.. _prefactor:

=========
Prefactor
=========


[Prefactor] Options
-------------------

**all_free_atoms**: Account for all free atoms when determining the prefactor.

    default: ``false``

**min_displacement**: Minimum amount that an atom has to move to be included in
the Hessian calculation.

    default: ``0.25``

**within_radius**: Atoms within this radius of moving atoms are included in the
Hessian.

    default: ``5.0``

**default_value**: Calculate prefactor if zero, otherwise use given value
instead of doing a full prefactor calculation.

    default: ``0``

**min_value**: Minimum value for a reasonable prefactor.

    default: ``1e+9``


**max_value**: Maximum value for a reasonable prefactor.

    default: ``1e+21``

**configuration**: When EON runs as a prefactor job the eigenfrequencies 
will be determined for the stated configuration.

    default: ``reactant``

    options:
        ``reactant``
        ``saddle``
        ``product``