Dispersion analysis of sodium dichromate dihydrate Na2Cr2O7·2H2O single crystal

Sonja Höfer; Jürgen Popp; Thomas G Mayerhöfer

doi:10.1016/j.saa.2018.07.035

Dispersion analysis of sodium dichromate dihydrate Na₂Cr₂O₇·2H₂O single crystal

Spectrochim Acta A Mol Biomol Spectrosc. 2018 Dec 5:205:243-250. doi: 10.1016/j.saa.2018.07.035. Epub 2018 Jul 12.

Authors

Sonja Höfer¹, Jürgen Popp², Thomas G Mayerhöfer²

Affiliations

¹ Leibniz-Institut für Photonische Technologien e.V., Albert-Einstein-Straße 9, D-07745 Jena, Germany. Electronic address: sonja.hoefer@uni-jena.de.
² Leibniz-Institut für Photonische Technologien e.V., Albert-Einstein-Straße 9, D-07745 Jena, Germany; Institut für Physikalische Chemie und Abbe Center of Photonics, Helmholtzweg 4, D-07743 Jena, Germany.

PMID: 30025294
DOI: 10.1016/j.saa.2018.07.035

Abstract

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 Na₂Cr₂O₇·2H₂O and by that the dielectric tensor function. The gained oscillator parameters were verified by forward-calculation of spectra using different crystal faces.

Keywords: Crystal structure; Dispersion analysis; Monoclinic symmetry; Sodium dichromate dihydrate.