The gaseous general anesthetic halothane (CF3-CHBrCl) was studied by ab ini
tio and density functional methods. The calculated vibrational spectrum was
compared with the experimental ones. Scaling coefficients were used in the
frequencies to improve the theoretical spectra, with errors lower than 0.5
%. The infrared and Raman spectra were predicted. (C) 1999 Elsevier Science
B.V. All rights reserved.