gaussian freqcheck and modesly out of range temperatures

From: Laurence Cuffe <Laurence.Cuffe()at()ucd.ie>
Organization: University College Dublin
Subject: gaussian freqcheck and modesly out of range temperatures
Date: Tue, 11 Jul 2000 15:52:29 +0100

    It is possible using the freqcheck facility supplied with Gausian to
     adjust the temperature at which thermodynamic parameters
     resulting from a frequency calculation are reported.  However the
     temperature input section seems to imply that the temperature
     range acceptable is only 0-298.0 degrees.
     I wonder how valid it is to use this utility for thermo-chemical
     analysis for temperatures moderately (say 40 degrees) higher than
     this? I am trying to compare rotational barrier heights which were
     measured by VT NMR over a temperature range of 35-50 degrees
     C with theoretical results, and wish to examine the assumption in
     the experimental work that delta G was independent of
     temperature over this temperature range.
     Thanks in advance
     Laurence Cuffe