Geology of Ore Deposits
Volume 51, Number 8, 833-837, DOI: 10.1134/S1075701509080170

Mineralogical Crystallography

Crystal chemistry of selenates with mineral-like structures: VIII. Butlerite chains in the structure of K(UO2)(SeO4)(OH)(H2O)

V. V. Gurzhii, A. A. Bessonov, S. V. Krivovichev, I. G. Tananaev, T. Armbruster and B. F. Myasoedov

View Related Documents

Abstract

A new potassium uranyl selenate compound K(UO2)(SeO4)(OH)(H2O) has been synthesized for the first time using the technique of evaporation from water solution. Its crystal structure has been solved by direct methods (monoclinic, P21/c,a = 8.0413(9) Å, b = 8.0362(9) Å, c = 11.6032(14) Å, β = 106.925(2)°, V = 717.34(14) Å3) and refined to R 1 = 0.0319 (wR 2 = 0.0824) for 1285 reflections with |F 0| > 4σ F . The structure consists of [(UO2(SeO4)(OH)(H2O)]− chains extending along axis b. In the chains, the uranyl pentagonal bipyramids are linked via bridged hydroxyl anions and tetrahedral oxoanions [SeO4]2−. Potassium ions are situated between these chains. No chains of that type have been observed in uranyl compounds earlier, but they had been detected in the structures of butlerite, parabutlerite, uklonskovite, fibroferrite, and a number of synthetic compounds.
Original Russian Text © V.V. Gurzhy, A.A. Bessonov, S.V. Krivovichev, I.G. Tananaev, T. Armbruster, B.F. Myasoedov, 2009, published in Zapiski RMO (Proceedings of the Russian Mineralogical Society), 2009, Pt. CXXXVII, No. 1, pp. 130–136.

Fulltext Preview

Image of the first page of the fulltext document