Novel Polyoxovanadate K2ZnV5O14: Crystal Structure and Peculiarities of Crystal Chemistry
- Authors: Yakubovich O.V.1, Dimitrova O.V.1
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Affiliations:
- Moscow State University
- Issue: Vol 63, No 5 (2018)
- Pages: 738-744
- Section: Structure of Inorganic Compounds
- URL: https://journals.rcsi.science/1063-7745/article/view/192899
- DOI: https://doi.org/10.1134/S1063774518050322
- ID: 192899
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Abstract
A novel structure type has been established as a result of studying a non-merohedral microtwin of polyoxovanadate (K2ZnV5O14) by X-ray diffractometry (R = 0.0595). The new compound, synthesized under hydrothermal conditions in the ZnCl2–K2CO3–V2O5–H2O system, is characterized as follows: a = 8.066(5) Å, b = 8.117(5) Å, c = 9.236(5) Å, β = 105.287(5)°, sp. P21/m, Z = 2, ρcalcd = 3.54 g/cm3. Edge-shared five-core “clusters” consisting of vanadium octahedra, between which ZnO4 tetrahedra (sharing vertices with octahedra) are located, form two-dimensional two-layer anion packets of the (ZnV5O14)2– composition, alternating along the c axis with layers of potassium atoms. Structural peculiarities determine the morphology and color of new-phase crystals.
About the authors
O. V. Yakubovich
Moscow State University
Author for correspondence.
Email: yakubol@geol.msu.ru
Russian Federation, Moscow, 119992
O. V. Dimitrova
Moscow State University
Email: yakubol@geol.msu.ru
Russian Federation, Moscow, 119992