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Crystals 2018, 8(5), 215; https://doi.org/10.3390/cryst8050215

Mild Synthesis and Structural Characterization of a Novel Vanadyl Selenite-Hydrogen Selenite Phase, Na[VO(SeO3)(HSeO3)]·1,5H2O

1
Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
2
Consorzio Interuniversitario Reattività Chimica e Catalisi (C.I.R.C.C.), Via Celsio Ulpiani 27, 70126 Bari, Italy
*
Author to whom correspondence should be addressed.
Received: 16 March 2018 / Revised: 7 May 2018 / Accepted: 13 May 2018 / Published: 15 May 2018
(This article belongs to the Special Issue Crystal Structures of Compounds Containing Ions Selenite)
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Abstract

Single crystals of Na[VO(SeO3)(HSeO3)]·1,5H2O have been prepared by solvent slow evaporation from an equimolar aqueous mixture of sodium selenite and vanadyl sulfate. The overall arrangement consists of VO6 octahedra, [SeO3]2− and [HSeO3] anions forming a strong backbone with channel-like voids, while sodium cations participate in the framework, ensuring the overall charge balance. The crystal packing of the material features channels with a star-shaped section showing a mean aperture of 6.10 Å with the oxygen atoms of the V=O moieties pointing towards the interior of the cavities. Their dimensions are the narrowest reported until now in vanadium selenite compounds. Disordered sodium cations with occupancy factor of 0.5 are found in the star-shaped section cavities together with disordered water molecules, interacting with each other via hydrogen bonds. View Full-Text
Keywords: vanadyl selenite; vanadyl hydrogen selenite; crystal structure; crystal packing; layered structure; channels vanadyl selenite; vanadyl hydrogen selenite; crystal structure; crystal packing; layered structure; channels
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Canossa, S.; Predieri, G.; Graiff, C. Mild Synthesis and Structural Characterization of a Novel Vanadyl Selenite-Hydrogen Selenite Phase, Na[VO(SeO3)(HSeO3)]·1,5H2O. Crystals 2018, 8, 215.

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