Crystal Structure of New Zinc-Hydroxy-Sulfate-Hydrate Zn4(OH)6SO4·2

Crystal Structure of New Zinc-Hydroxy-Sulfate-Hydrate Zn4(OH)6SO4·2–2.25H2O

Published:2024-02-12 Issue:2 Volume:14 Page:183
ISSN:2073-4352
Container-title:Crystals
language:en
Short-container-title:Crystals

Author:

Stanimirova Tsveta¹^ORCID,Nikolova Rositsa²^ORCID,Petrova Nadia²

Affiliation:

1. Department of Mineralogy, Petrology and Economic Geology, Faculty of Geology and Geography, Sofia University “St. Kliment Ohridski”, 15 Tzar Osvoboditel Blvd., 1000 Sofia, Bulgaria

2. Institute of Mineralogy and Crystallography—Bulgarian Academy of Sciences, 107 Acad. G. Bonchev Str., 1113 Sofia, Bulgaria

Abstract

A theoretical model of the crystal structure of the newly obtained compound Zn4(OH)6SO4·2–2.25H2O based on the compilation of the crystal–chemical properties of two known zinc-hydroxy-sulfate phases—mineral namuwite and hemihydrate—is proposed. The single XRD data confirmed the model and determined the structure, with a trigonal symmetry SG of P-3, the unit cell with a = 8.3418(15) Å and c = 17.595(7) Å, and a cell volume of 1060.3(6) Å3, with Z = 2. The results show that the Zn4(OH)6SO4·2–2.5H2O crystal structure consists of an alternating paired octahedral–tetrahedral doubly decorated hydroxide layer with cationic vacancies and an aqueous interlayer.

Publisher

MDPI AG

Link

https://www.mdpi.com/2073-4352/14/2/183/pdf

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