Dipole moment function of LiF and LiCl obtained from the Herman-Wallis analysis: A comparative study with the MBER data

FTIR absorption spectra of the fundamental bands of LiF and LiCl were measu red with an apodized resolution of 0.01 cm(-1). The Herman-Wallis analysis of these spectra led to the determination of the ratio of the dipole deriva tive to the permanent dipole moment, [mu(e)(d mu/dr)(e)r(e)], for each mole cule, The vibrational dependence of the dipole moment for each molecule has been already reported and these data were reanalyzed to determine the dipo le moment function independently. The results from the Herman-Wallis analys is were compared with these results, and good agreement was found. This dem onstrates that the Herman-Wallis analysis can produce reliable relative val ues of dipole moment functions, (C) 1999 Academic Press.