Abstract
The naturally occurring compounds of thorium ThSiO4, ThSiO4· nH2O, and (Th, Fe)SiO4 and uranium USiO4· nH2O have been studied by X-ray photoelectron spectroscopy in the range of electron binding energies from 0 to 1200 eV. The oxidation state of Th in the natural compounds is close to that in Th(OH)4; for uranium, it is similar to that in UO2. Based on the structure of the low-energy electron spectra it is assumed that the electrons of the filled Th6p- and O2s-atomic orbitals take an active part in chemical bonding. Fine structure was observed in the Th(U)6s-, 5d-, 5p-, 4f-, 4d-, and 4p 3/2 electron spectra of all substances under study. Mechanisms of fine structure formation are discussed and the fine structure parameters are correlated with the physicochemical properties of the compounds.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
Yu. A. Teterin, A. S. Baev, S. G. Gagarin, and V. D. Klimov, Radiokhim., 27, No. 1, 3-13 (1985).
Yu. A. Teterin, V. M. Kulakov, A. S. Baev, et al., Phys. Chem. Miner., 7, 151-158 (1981).
I. A. Knunyants (ed.), Concise Chemical Encyclopedia [in Russian], Vol. 5, Sovetskaya Entsiklopediya, Moscow (1967).
A. S. Baev, Yu. A. Teterin, K. E. Ivanov, et al., Radiokhim., 39, No. 2, 171-176 (1997).
Yu. A. Teterin and A. S. Baev, X-Ray Photoelectron Spectroscopy of Light Actinide Compounds [in Russian], TsNIIatominform, Moscow (1986).
Yu. A. Teterin and S. G. Gagarin, Usp. Khim., 65, No. 10, 895-919 (1996).
V. A. Gubanov, A. Rosen, and D. E. Ellis, Solid State Commun., 22, No. 4, 219-223 (1977). 971
Rights and permissions
About this article
Cite this article
Teterin, Y.A., Utkin, I.O., Melnikov, I.V. et al. X-Ray Photoelectron Study of Thorium Silicate ThSiO4 · nH2O and Uranium Silicate USiO4·nH2O. Journal of Structural Chemistry 41, 965–971 (2000). https://doi.org/10.1023/A:1010302805492
Issue Date:
DOI: https://doi.org/10.1023/A:1010302805492