Hi,

By default, thermodynamic properties on top of harmonic frequencies are computed at room temperature. Different values of temperature can be explored by use of the TEMPERAT keyword. To restart the harmonic frequency calculation, use the RESTART keyword. An example is given below:

FREQCALC RESTART TEMPERAT 5 200 600 END

With the input above, thermodynamic properties will be computed and printed at 5 temperatures, equally spaced in the range 200-600 K.