SOURCE: The polynomial coefficients were provided by Martin J. Rabinowitz of NASA Lewis Research Center (marty@lerc.nasa.gov)
[The enthalpy of formation at 298 K is from Chen, I.C., Green, W.H., and Moore, C.B. (1988) J. Chem. Phys. 89, 314; and Jensen, P., and Bunker, P.R. (1988) J. Chem. Phys. 89, 1327.]

 _____________________________________________
    T           Cp          S        delta-Hf
  _____        ________________      ________
    K             cal/mol K          kcal/mol
 _____________________________________________
    
   200         8.03       43.20       93.79
   298         8.37       46.46       93.77
   300         8.38       46.52       93.77
   400         8.73       48.98       93.68
   500         9.08       50.96       93.56
   600         9.41       52.65       93.41
   700         9.73       54.12       93.24
   800        10.03       55.44       93.06
   900        10.33       56.64       92.88
  1000        10.66       57.75       92.71
  1100        10.95       58.78       92.54
  1200        11.21       59.74       92.37
  1300        11.45       60.65       92.21
  1400        11.67       61.50       92.06
  1500        11.87       62.32       91.90
  1600        12.04       63.09       91.75
  1700        12.20       63.82       91.59
  1800        12.34       64.52       91.43
  1900        12.47       65.19       91.28
  2000        12.58       65.84       91.12
  2100        12.69       66.45       90.95
  2200        12.78       67.05       90.79
  2300        12.86       67.62       90.62
  2400        12.93       68.16       90.44
  2500        13.00       68.69       90.27
  2600        13.06       69.20       90.09
  2700        13.11       69.70       89.91
  2800        13.16       70.18       89.72
  2900        13.21       70.64       89.53
  3000        13.25       71.09       89.33