Dispersion analysis of sodium dichromate dihydrate Na 2 Cr 2 O 7 ·2H 2 O single crystal.

A single crystal of monoclinic sodium dichromate dihydrate was investigated by FTIR-spectroscopy in the spectral region of 4000-80 cm-1 . On the measured reflection spectra dispersion analysis was performed to gain the oscillator parameters of the transition dipole moments of Na2 Cr2 O7 ·2H2 O and by that the dielectric tensor function. The gained oscillator parameters were verified by forward-calculation of spectra using different crystal faces.