Abstract
The crystal structure of a new compound Zn(SeO4)(H2O)2 (orthorhombic, Pbca, a = 9.0411(13), b = 10.246(2), c = 10.3318(15) Å, V = 957.1(3) Å3) has been solved by direct methods and refined to R 1 = 0.033 on the basis of 1076 observed reflections with |F hkl | ≥ 4σ|F hkl |. The structure contains one independent Zn2+ cation coordinated by two water molecules and four oxygen atoms of selenate group. The only independent (SeO4)2− tetrahedral oxoanion is tetradentate, sharing its corners with four adjacent [Zn2+O2(H2O4)]2+ octahedrons. The structure can be described as consisting of heteropolyhedral sheets parallel to the (001) plane and linked together into a three-dimensional network. The compound belongs to the variscite structure type and is the first structurally characterized selenate of this group.
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References
J. M. Bennett, W. J. Dytrych, J. J. Pluth, et al., “Structural Features of Aluminophosphate Materials with Aluminium/Phosphorus = 1,” in Zeolites, Vol. 6, 349–360 (1986).
S. Dick, “Die Struktur von GaAsO4 · 2(H2O): Ein neues Mitglied der Variscit-Familie,” Z. Naturforsch. 52b, 1337–1340 (1997).
W. T. Harrison, “Synthetic Mansfieldite, AlAsO4 · 2H2O,” Acta Crystallogr. C56, (2000).
F. C. Hawthorne, “Hydrogen Positions in Scorodite,” Acta Crystallogr. B32, 2891–2892 (1976).
R. Kniep, D. Mootz, and A. Vegas, “Variscite,” Acta Crystallogr. B33, 263–265 (1977).
P. Kokkoros, “Comparative X-Ray Studies of Arsenates and Selenates,” N. Jb. Miner., Geol., 252–253 (1939).
S. V. Krivovichev, “Combinatorial Topology of Inorganic Oxysalts: 0-, 1-and 2-Dimensional Units with Corner-Sharing between Coordination Polyhedra,” Crystallogr. Rev. 10, 185–232 (2004).
S. V. Krivovichev, “Topology of Microporous Structures,” Rev. Mineral. Geochem. 57, 17–68 (2005).
S. V. Krivovichev, “Crystal Chemistry of Selenates with Mineral-Type Structures. I. [Al(H2O)6]2(SeO4)3(H2O)4—a Selenate Analog of Alunogen,” Zap. Vseross. Mineral. O-va 135(2), 106–113 (2006a).
S. V. Krivovichev, “Crystal Chemistry of Selenates with Mineral-Type Structures. II. [Al(H2O)6]2(SeO4)(NO3)(H2O) Crystal Structure and Its Relationship with Alunogen Structure,” Zap. Vseross. Mineral. O-va 135(3), 96–101 (2006b).
S. V. Krivovichev, “Crystal Chemistry of Selenates with Similar Mineral-Type Structures. III. Heteropolyhedral Series in [Mg(H2O)4(SeO4)]2(H2O) Crystal Structure,” Zap. Vseross. Mineral. O-va 135(4), 80–87 (2006c).
T. Loiseau, C. Paulet, and G. Ferey, “Crystal Structure Determination of the Hydrated Gallium Phosphate GaPO4 · 2(H2O), Analog of Variscite,” C. R. Acad. Sci., Ser. II, Paris 1 667–674 (1998).
Y. Song, P. Yu. Zavalij, M. Suzuki, and M. S. Wittingham, “New Iron(III) Phosphate Phases: Crystal Structure and Electrochemical and Magnetic Properties,” Inorg. Chem. 41, 5778–5786 (2002).
X. J. Tang, M. J. Gentiletti, and A. Lachgar, “Synthesis and Crystal Structure of Indium Arsenate and Phosphate Dehydrates with Variscite and Metavariscite Structure Types,” J. Chem. Crystallogr. 31, 45–50 (2001).
Y. Xu, L. L. Koh, L. H. An, et al., “A Comparative Study of Novel Microporous Indium Phosphate and Other M(III)X (V)O4-Type Microporous Materials,” J. Solid State Chem. 117, 373–378 (1995).
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Original Russian Text © S.V. Krivovichev, 2006, published in Zapiski Rossiiskogo Mineralogicheskogo Obshchestva, 2006, Pt CXXXV, No. 5, pp. 95–101.
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Krivovichev, S.V. Crystal chemistry of selenates with mineral-like structures. IV. Crystal structure of Zn(SeO4)(H2O)2, a new compound with a mixed framework of the variscite type. Geol. Ore Deposits 49, 542–546 (2007). https://doi.org/10.1134/S1075701507070094
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DOI: https://doi.org/10.1134/S1075701507070094