Vibrational spectra of Hg3TeO6 and Hg2TeO5

The infrared and Raman spectra of the crystalline hexaoxotellurates Hg3TeO6 and Hg2TeO5 were recorded and discussed on the basis of a site symmetry analysis derived from known structural data. Approximate values for the TeO bond force constants are reported and some comparisons with related species are made.