<div class="csl-bib-body">
<div class="csl-entry">Eder, F., Marsollier, A., & Weil, M. (2023). Structural studies on synthetic A₂₋ₓ[M₂(TeO₃)₃]·nH₂O phases (A = Na, K, Rb, Cs; M = Mn, Co, Ni, Cu, Zn) with zemannite-type structures. <i>Mineralogy and Petrology</i>, <i>117</i>(2), 145–163. https://doi.org/10.1007/s00710-023-00814-5</div>
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dc.identifier.issn
0930-0708
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/190457
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dc.description.abstract
During a systematic study on formation conditions of new compounds with zemannite-type structures, crystals of ten new oxidotellurate(IV) phases were grown under hydrothermal conditions, partially by employing a drastic reduction of the water content. The crystal structures of the obtained phases were determined by single-crystal X-ray diffraction. Na₂[Ni₂(TeO₃)₃]·2.5H₂O, K₂[Ni₂(TeO₃)₃]·H₂O, K₂[Zn₂(TeO₃)₃]·2H₂O, Rb₁.₂₅[Co₂(TeO₃)₃]·1.5H₂O and Rb₁.₂₄[Mn₂(TeO₃)₃]·2H₂O exhibit a unit-cell with hexagonal symmetry (Z = 2, a ≈ 9.3 Å, c ≈ 7.7 Å), in which most of the other compounds with a zemannite-type structure are known to crystallize. Relative to this unit-cell, K₂[Cu₂(TeO₃)₃]·2H₂O exhibits a twofold superstructure, K₂[Co₂(TeO₃)₃]·2.5H₂O a twofold superstructure with an additional incommensurate modulation, Na₂[Cu₂(TeO₃)₃]·1.5H₂O a threefold superstructure, and Rb₁.₅[Mn₂(TeO₃)₃]·1.25H₂O and Cs[Mn₂(TeO₃)₃]·H₂O a fourfold superstructure. Disorder of the alkali metal cations and crystal water molecules in the channels as well as variable water contents complicate modelling and structure refinement.
en
dc.language.iso
en
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dc.publisher
SPRINGER WIEN
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dc.relation.ispartof
Mineralogy and Petrology
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dc.subject
Channel structure
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dc.subject
Disorder
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dc.subject
Oxidotellurate
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dc.subject
Superstructure
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dc.subject
Zemannite
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dc.title
Structural studies on synthetic A₂₋ₓ[M₂(TeO₃)₃]·nH₂O phases (A = Na, K, Rb, Cs; M = Mn, Co, Ni, Cu, Zn) with zemannite-type structures
