CaSeO4·0.625H2O--water channel occupation in a bassanite related structure.

Authors :: Fritz S
Schmidt H
Paschke I
Magdysyuk OV
Dinnebier RE
Freyer D
Voigt W
Source :: Acta crystallographica. Section B, Structural science [Acta Crystallogr B] 2011 Aug; Vol. 67 (Pt 4), pp. 293-301. Date of Electronic Publication: 2011 Jul 18.
Publication Year :: 2011
Abstract: Calcium selenate subhydrate, CaSeO(4)·0.625H(2)O, was prepared by hydrothermal conversion of CaSeO(4)·2H(2)O at 463 K. From the single crystals obtained in the shape of hexagonal needles, 50-300 µm in length, the crystal structure could be solved in a trigonal unit cell with space group P3(2)21. The cell was confirmed and refined by high-resolution synchrotron powder diffraction. The subhydrate was characterized by thermal analysis and Raman spectroscopy.