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Simura R, Watanabe T, Yamane H. Sr 9La 2(WO 6) 4 containing [WO 6] octahedra. Acta Crystallogr E Crystallogr Commun 2022; 78:766-769. [PMID: 35974823 PMCID: PMC9361373 DOI: 10.1107/s2056989022006648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Accepted: 06/28/2022] [Indexed: 05/31/2023]
Abstract
A polycrystalline sample of Sr9La2(WO6)4, nonastrontium dilanthanum tetrakis[orthotungstate(VI)], was prepared by heating a compacted powder mixture of SrCO3, WO3, and La2O3 with an Sr:La:W molar ratio of 9:2:4 at 1473 K. X-ray crystal structure analysis was performed for a Sr9La2(WO6)4 single-crystal grain grown by reheating the sample at 1673 K. Sr9La2(WO6)4 crystallizes with four formula units in the tetragonal space group I41/a and is isotypic with Sr11(ReO6)4. Two W sites with site symmetries of \overline{1} are located at the center of isolated [WO6] octahedra, and four mixed (Sr/La) sites are surrounded by eight to twelve O atoms of the [WO6] octahedra. The structure of Sr9La2(WO6)4 can be described on the basis of the double-perovskite structure with [WO6] and [(Sr/La)O
x
] polyhedra alternately placed, and a vacancy (□).
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IJdo D, Fu W, Akerboom S. Crystal structure of Ba9La2W4O24 and Sr9Gd2W4O24: A new B-site vacancy ordered 4×4×4 cubic perovskite. J SOLID STATE CHEM 2016. [DOI: 10.1016/j.jssc.2016.03.039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kemmler-Sack S, Betz B. Photolumineszenz im System A2II B1/4II Gd1/2?x Eux ?1/4 WO6 ? A8II BII Gd2?x Eux ? W4O24 (AII, BII = Sr, Ba). Z Anorg Allg Chem 1983. [DOI: 10.1002/zaac.19834980323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Betz B, Kemmler-Sack S. �ber geordnete Perowskite mit Kationenfehlstellen. XI. Verbindungen vom Typ A2IIB1/4IIB1/2III?1/4WVIO6 ? A8IIBIIB2III?W4VIO24 mit AII, BII = Ba, Sr. Z Anorg Allg Chem 1982. [DOI: 10.1002/zaac.19824880119] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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