# MOVE_MM_CHARGE

Section can be repeated.

Specify information to move a classical charge before the QM/MM energies and forces evaluation [Edit on GitHub]

## Keywords

- ALPHA

- ATOM_INDEX_1

- ATOM_INDEX_2

- CORR_RADIUS

- RADIUS

## Keyword descriptions

ALPHA: real

  Usage: ALPHA real

  Specifies the scaling factor that defines the movement along the defined direction [Edit on GitHub]

ATOM_INDEX_1: integer

  Aliases: MM1

  Usage: ATOM_INDEX_1 integer

  Specifies the index of the MM atom involved in the QM/MM link to be moved [Edit on GitHub]

ATOM_INDEX_2: integer

  Aliases: MM2

  Usage: ATOM_INDEX_2 integer

  Specifies the index of the second atom defining the direction along which the atom will be moved [Edit on GitHub]

CORR_RADIUS: real = 0.00000000E+000 [angstrom]

  Usage: CORR_RADIUS real

  Specifies the correction radius used for the QM/MM electrostatic coupling after movement [Edit on GitHub]

RADIUS: real = 0.00000000E+000 [angstrom]

  Usage: RADIUS real

  Specifies the radius used for the QM/MM electrostatic coupling after movement [Edit on GitHub]