NaGaS₂: An Elusive Layered Compound with Dynamic Water Absorption and Wide‐Ranging Ion‐Exchange Properties

Abstract

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Unusual Atmospheric Water Trapping and Water Induced Reversible Restacking of 2D Gallium Sulfide Layers in NaGaS2 Formed by Supertetrahedral Building Unit

“…It worth noting that, compared to the very recently published work, 36 projection of the crystal structure (Figure S7). This is further confirmed by comparing the unit cell volumes, 1899.5 vs 1886.5 Å 3 , for the DFT and SC-XRD solutions, respectively.…”

“…During the preparation of our revised version of the manuscript, another publication appeared reporting hydration of NaGaS 2 and ionexchange properties of this material. 36 ■ EXPERIMENTAL SECTION Synthesis. The following reagents were used as received: Ga ingots (99.9%, Sigma-Aldrich), Fe powder (99.9%, Sigma-Aldrich), and S flakes (99.9%, Sigma-Aldrich).…”

Ethane oxidative dehydrogenation with CO2 on thiogallates

“…The powder X-ray diffraction (PXRD) patterns of the obtained product powders showed patterns similar to NaGaS2 and to K0.56Na0.44GaS2. 14 The ICSD structure of KGaS2 published in the Inorganic Crystal Structure Database (ICSD collection code 107928) refers to Delgado's study, 33 the object of which is the analysis of the compound TlGaSe2. So, the assignment in the database was done for a compound of a different to KGaS2 composition and remains questionable.…”

“…They exist in several structure types. The most known and the most well-studied is AGaS 2 (AvNa, 14 Cs, 15 Ag [16][17][18] ) family of materials. Several novel members in this family, Na 6 Ga 2 S 6 19 and A 5 GaS 4 (AvLi, Na), 20 were recently discovered.…”

“…A standard protocol for synthesizing the various ternary A x GaS y materials involves heating to 650-800 °C for several hours in the sealed quartz ampoule. 14,20 A few studies report the low-temperature synthesis route to alkali-containing ternary thiogallates, which is more advantageous for industrialization. For instance, AgGaS 2 18 was obtained at 300 °C under the N 2 atmosphere in the presence of oleates.…”