&FORCE_EVAL
  METHOD FIST
  &MM
    &FORCEFIELD
      parm_file_name ../sample_pot/water.pot
      parmtype CHM
      &CHARGE
        ATOM OT
        CHARGE 0.0
      &END CHARGE
      &CHARGE
        ATOM HT
        CHARGE 0.0
      &END CHARGE
    &END FORCEFIELD
    &POISSON
      &EWALD
        EWALD_TYPE spme
        ALPHA .44
        GMAX 24
        O_SPLINE 6
      &END EWALD
    &END POISSON
  &END MM
  &SUBSYS
    &CELL
      ABC 8.0 8.0 8.0
    &END CELL
    &COORD
  OT         3.0024173006        3.0061145185        2.9033933250 WAT
  HT         3.0015113773        2.2476529266        3.4871245887 WAT
  HT         3.0017525562        3.7616371430        3.4909306730 WAT
    &END COORD
    &KIND OT
      ELEMENT O
    &END
    &KIND HT
      ELEMENT H
    &END
    &TOPOLOGY
       CONNECTIVITY GENERATE
       &GENERATE
        BONDPARM_FACTOR 1.2
       &END
    &END
  &END SUBSYS
&END FORCE_EVAL
&GLOBAL
  PROJECT wat_freq_freeze
  RUN_TYPE NORMAL_MODES
  #RUN_TYPE GEO_OPT
&END GLOBAL
&MOTION
  &CONSTRAINT
    &FIXED_ATOMS
      LIST 1 2 
    &END FIXED_ATOMS
  &END CONSTRAINT
  &MD
    ENSEMBLE NVE
    STEPS 100
    TIMESTEP 2.5
    TEMPERATURE 298
  &END MD
&END MOTION
&VIBRATIONAL_ANALYSIS
 DX 0.001
&END
