  We have performed the LiTaWO$_6$ vibrational studies for both Raman and
infrared actives modes. Although we do not have crystalline samples, the study
was conducted qualitatively, firstly comparing the sample with similar
compounds in the literature, and secondly comparing both Raman and infrared
spectra of the LiTaWO$_6$ compound. Although the procedure is limited, we can
assign 8 of the 10 Raman-IR active modes expected by Group Theory.
