{"title":"Ba2YAlO5的钙钛矿相关结构以及含有AlO4四面体的Ba6Y2Al4O15的β和α相。","authors":"Rayko Simura, Yamato Suzuki, Hisanori Yamane","doi":"10.1107/S2053229623008860","DOIUrl":null,"url":null,"abstract":"<p><p>Single crystals of Ba<sub>2</sub>YAlO<sub>5</sub> and of the α and β phases of Ba<sub>6</sub>Y<sub>2</sub>Al<sub>4</sub>O<sub>15</sub> suitable for X-ray structure analysis were obtained via grain growth of polycrystalline samples prepared by solid-state reactions. Ba<sub>2</sub>YAlO<sub>5</sub> was found to have a monoclinic crystal structure, with lattice parameters a = 7.2333 (7), b = 6.0254 (5), c = 7.4294 (7) Å and β = 117.249 (3)°, and to belong to the space group P2<sub>1</sub>/m, while α-Ba<sub>6</sub>Y<sub>2</sub>Al<sub>4</sub>O<sub>15</sub> was determined to be monoclinic, with a = 5.9019 (2), b = 7.8744 (3), c = 9.6538 (3) Å and β = 107.7940 (10)°, and the space group Pm, and β-Ba<sub>6</sub>Y<sub>2</sub>Al<sub>4</sub>O<sub>15</sub> was found to be monoclinic, with a = 7.8310 (2), b = 5.8990 (2), c = 18.3344 (6) Å and β = 91.6065 (11)°, and the space group P2/c. In each of these compounds, BO<sub>6</sub> octahedra in ABO<sub>3</sub> perovskite-type structures were replaced by AlO<sub>4</sub> tetrahedra and YO<sub>6</sub> octahedra. Polycrystalline samples in which some Y atoms were replaced with Eu exhibited orange-red luminescence in the range 580-730 nm in response to exposure to radiation having a wavelength of approximately 250 nm.</p>","PeriodicalId":7115,"journal":{"name":"Acta Crystallographica Section C Structural Chemistry","volume":null,"pages":null},"PeriodicalIF":0.7000,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Perovskite-related structures of Ba<sub>2</sub>YAlO<sub>5</sub> and the β and α phases of Ba<sub>6</sub>Y<sub>2</sub>Al<sub>4</sub>O<sub>15</sub> containing AlO<sub>4</sub> tetrahedra.\",\"authors\":\"Rayko Simura, Yamato Suzuki, Hisanori Yamane\",\"doi\":\"10.1107/S2053229623008860\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Single crystals of Ba<sub>2</sub>YAlO<sub>5</sub> and of the α and β phases of Ba<sub>6</sub>Y<sub>2</sub>Al<sub>4</sub>O<sub>15</sub> suitable for X-ray structure analysis were obtained via grain growth of polycrystalline samples prepared by solid-state reactions. Ba<sub>2</sub>YAlO<sub>5</sub> was found to have a monoclinic crystal structure, with lattice parameters a = 7.2333 (7), b = 6.0254 (5), c = 7.4294 (7) Å and β = 117.249 (3)°, and to belong to the space group P2<sub>1</sub>/m, while α-Ba<sub>6</sub>Y<sub>2</sub>Al<sub>4</sub>O<sub>15</sub> was determined to be monoclinic, with a = 5.9019 (2), b = 7.8744 (3), c = 9.6538 (3) Å and β = 107.7940 (10)°, and the space group Pm, and β-Ba<sub>6</sub>Y<sub>2</sub>Al<sub>4</sub>O<sub>15</sub> was found to be monoclinic, with a = 7.8310 (2), b = 5.8990 (2), c = 18.3344 (6) Å and β = 91.6065 (11)°, and the space group P2/c. In each of these compounds, BO<sub>6</sub> octahedra in ABO<sub>3</sub> perovskite-type structures were replaced by AlO<sub>4</sub> tetrahedra and YO<sub>6</sub> octahedra. Polycrystalline samples in which some Y atoms were replaced with Eu exhibited orange-red luminescence in the range 580-730 nm in response to exposure to radiation having a wavelength of approximately 250 nm.</p>\",\"PeriodicalId\":7115,\"journal\":{\"name\":\"Acta Crystallographica Section C Structural Chemistry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.7000,\"publicationDate\":\"2023-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Crystallographica Section C Structural Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1107/S2053229623008860\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2023/10/17 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Crystallographica Section C Structural Chemistry","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1107/S2053229623008860","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2023/10/17 0:00:00","PubModel":"Epub","JCR":"Q4","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Perovskite-related structures of Ba2YAlO5 and the β and α phases of Ba6Y2Al4O15 containing AlO4 tetrahedra.
Single crystals of Ba2YAlO5 and of the α and β phases of Ba6Y2Al4O15 suitable for X-ray structure analysis were obtained via grain growth of polycrystalline samples prepared by solid-state reactions. Ba2YAlO5 was found to have a monoclinic crystal structure, with lattice parameters a = 7.2333 (7), b = 6.0254 (5), c = 7.4294 (7) Å and β = 117.249 (3)°, and to belong to the space group P21/m, while α-Ba6Y2Al4O15 was determined to be monoclinic, with a = 5.9019 (2), b = 7.8744 (3), c = 9.6538 (3) Å and β = 107.7940 (10)°, and the space group Pm, and β-Ba6Y2Al4O15 was found to be monoclinic, with a = 7.8310 (2), b = 5.8990 (2), c = 18.3344 (6) Å and β = 91.6065 (11)°, and the space group P2/c. In each of these compounds, BO6 octahedra in ABO3 perovskite-type structures were replaced by AlO4 tetrahedra and YO6 octahedra. Polycrystalline samples in which some Y atoms were replaced with Eu exhibited orange-red luminescence in the range 580-730 nm in response to exposure to radiation having a wavelength of approximately 250 nm.
期刊介绍：
Acta Crystallographica Section C: Structural Chemistry is continuing its transition to a journal that publishes exciting science with structural content, in particular, important results relating to the chemical sciences. Section C is the journal of choice for the rapid publication of articles that highlight interesting research facilitated by the determination, calculation or analysis of structures of any type, other than macromolecular structures. Articles that emphasize the science and the outcomes that were enabled by the study are particularly welcomed. Authors are encouraged to include mainstream science in their papers, thereby producing manuscripts that are substantial scientific well-rounded contributions that appeal to a broad community of readers and increase the profile of the authors.
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