Oksana P. Grigorieva, Victor A. Tafeenko, Alexey N. Kuznetsov, Peter S. Berdonosov, Valery A. Dolgikh
{"title":"Rb2HSc(IO3)6 – a new member of the iodate family with a structural unit [M(IO3)6]","authors":"Oksana P. Grigorieva, Victor A. Tafeenko, Alexey N. Kuznetsov, Peter S. Berdonosov, Valery A. Dolgikh","doi":"10.1016/j.solidstatesciences.2025.108015","DOIUrl":null,"url":null,"abstract":"<div><div>The new compound Rb<sub>2</sub>HSc(IO<sub>3</sub>)<sub>6</sub> was prepared by the hydrothermal method. According to the single-crystal X-ray diffraction data, the compound crystallizes in the triclinic space group <em>P</em>-1, with the cell parameters <em>a</em> = 7.7390(5) Å, <em>b</em> = 7.7362(5) Å, <em>c</em> = 7.7634(6) Å, <em>α</em> = 97.197(5) <sup>o</sup>, <em>β</em> = 98.193(5) <sup>o</sup>, γ = 98.787(5) <sup>o</sup>. Thermal analysis shows it to be stable up to 430 °C. The compound was also characterized by the IR spectroscopy and EDX analysis. DFT calculations predict wide-gap semiconducting behavior for Rb<sub>2</sub>HSc(IO<sub>3</sub>)<sub>6</sub> and establish a bonding pattern of covalent interactions within IO<sub>3</sub>- and ScO<sub>6</sub>-units, accompanied by ionic interactions of these units with rubidium cations. Rb<sub>2</sub>HSc(IO<sub>3</sub>)<sub>6</sub> is considered a new phase in the A<sub>3</sub>M(IO<sub>3</sub>)<sub>6</sub> family and its structural features are presented and discussed in comparison with other family representatives. Based on the crystallographic and computational considerations, the possibility for Rb<sub>2</sub>HSc(IO<sub>3</sub>)<sub>6</sub> to form different polymorphs is also discussed.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"168 ","pages":"Article 108015"},"PeriodicalIF":3.4000,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solid State Sciences","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1293255825001931","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
The new compound Rb2HSc(IO3)6 was prepared by the hydrothermal method. According to the single-crystal X-ray diffraction data, the compound crystallizes in the triclinic space group P-1, with the cell parameters a = 7.7390(5) Å, b = 7.7362(5) Å, c = 7.7634(6) Å, α = 97.197(5) o, β = 98.193(5) o, γ = 98.787(5) o. Thermal analysis shows it to be stable up to 430 °C. The compound was also characterized by the IR spectroscopy and EDX analysis. DFT calculations predict wide-gap semiconducting behavior for Rb2HSc(IO3)6 and establish a bonding pattern of covalent interactions within IO3- and ScO6-units, accompanied by ionic interactions of these units with rubidium cations. Rb2HSc(IO3)6 is considered a new phase in the A3M(IO3)6 family and its structural features are presented and discussed in comparison with other family representatives. Based on the crystallographic and computational considerations, the possibility for Rb2HSc(IO3)6 to form different polymorphs is also discussed.
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