This dataset consists of CSV ASCII files, which are named according to the corresponding figures in the paper: PDielec: The Calculation of Infrared and Terahertz Absorption for Powdered Crystals by John Kendrick and Andrew Burnett which has been submitted for publication in The Journal of Computational Chemsitry. Each file contains the raw x-y data and corresponding units to plot each of the figures. The code used to generate calculated spectra (PDielec), along with the example input files needed to predict the phonon positions and itensities can be found at https://github.com/JohnKendrick/PDielec.