Raman spectroscopic study of the uranyl oxyhydroxide hydrates : becquerelite, billietite, curite, schoepite and vandendriesscheite
Frost, Ray L., Cejka, Jiri, & Weier, Matt L. (2006) Raman spectroscopic study of the uranyl oxyhydroxide hydrates : becquerelite, billietite, curite, schoepite and vandendriesscheite. Journal of Raman Spectroscopy, 38(4), pp. 460-466.
Raman and infrared spectra of five uranyl oxyhydroxide hydrates, becquerelite, billietite, curite, schoepite and vandendriesscheite are reported. Observed bands are attributed to the (UO2)2+ stretching and bending vibrations, U-OH bending vibrations, H2O and (OH)- stretching, bending and libration modes. U-O bond lengths in uranyls and O-H…O bond lengths are calculated from the wavenumbers assigned to the stretching vibrations. They are close to the values inferred and/or predicted from the X-ray single crystal structure. The complex hydrogen-bonding network arrangement was proved in the structures of all minerals studied. This hydrogen bonding contributes to the stability of these uranyl minerals.
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