The family of MII3(TeIVO3)2(OH)2 compounds—Prone to inclusion of foreign components into large hexagonal channels

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Marco E. Ciriotti
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The family of MII3(TeIVO3)2(OH)2 compounds—Prone to inclusion of foreign components into large hexagonal channels

Messaggio da Marco E. Ciriotti » sab 01 ott, 2022 10:45

Referenza:
▪ Eder, F., Weil, M., Missen, O.P., Kolitsch, U., Libowitzky, E. (2022): The Family of MII3(TeIVO3)2(OH)2 (M = Mg, Mn, Co, Ni) Compounds—Prone to Inclusion of Foreign Components into Large Hexagonal Channels. Crystals, 12, 1380.

Abstract:
MII3(TeIVO3)2(OH)2 (M = Mg, Mn, Co, Ni) compounds crystallize isotypically in the hexagonal space group P63mc (No. 186) with unit-cell parameters of a » 13 Å, c » 5 Å. In the crystal structure, a framework with composition M3(TeO3)2(OH)1.50.5+ defines large hexagonal channels extending along [001] where the remaining OH– anions are located. Crystal-growth studies under mild hydrothermal conditions with subsequent structure analyses on basis of X-ray diffraction methods revealed that parts of other anions present in solution such as CO32–, SO42–, SeO42–, NO3–, Cl– or Br– could partly replace the OH– anions in the channels. The incorporation of such anions into the M3(TeO3)2(OH)2 structure was confirmed by energy-dispersive X-ray spectrometry (EDS) measurements and Raman spectroscopy of selected single-crystals.
Marco E. Ciriotti

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