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Novel Polyoxovanadate K 2 ZnV 5 O 14 : Crystal Structure and Peculiarities of Crystal Chemistry

Novel Polyoxovanadate K 2 ZnV 5 O 14 : Crystal Structure and Peculiarities of Crystal Chemistry 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Crystallography Reports Springer Journals

Novel Polyoxovanadate K 2 ZnV 5 O 14 : Crystal Structure and Peculiarities of Crystal Chemistry

Crystallography Reports , Volume 63 (5): 7 – Sep 1, 2018

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References (15)

Publisher
Springer Journals
Copyright
2018 Pleiades Publishing, Inc.
ISSN
1063-7745
eISSN
1562-689X
DOI
10.1134/s1063774518050322
Publisher site
See Article on Publisher Site

Abstract

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.

Journal

Crystallography ReportsSpringer Journals

Published: Sep 1, 2018

Keywords: Crystallography and Scattering Methods

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