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Synthesis and crystal structure of Sr3Bi2O6 and structure change in the strontium-bismuth-oxide system

Abstract

Crystal structures and its change trend in the strontium-bismuth-oxide system are critical for the studies of related systems and their applications. The crystal structure of Sr3Bi2O6 was obtained for the first time in the space group of R-3 with a huge unit cell a=b=25.1146(19) Å, c=18.3685(16) Å, and all bismuth ions are Bi3+ forming [BiO3] trigonal pyramids. Sr3Bi2O6 is a key compound for the structure change trend in the SrO-Bi2O3 binary oxide system at 1000 °C. With bismuth content decreasing, its valence state changes from +3 to +5, and Bi-O polyhedra change from connected to isolated before Bi(V) appearance. In the system, the boundary of the solid solution β-phase (Sr1-xBixO1+0.5x) at 900 °C was also determined accurately as 0.770≤x≤0.862 experimentally.

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Publication details

The article was received on 06 Dec 2017, accepted on 29 Dec 2017 and first published on 29 Dec 2017


Article type: Paper
DOI: 10.1039/C7DT04610C
Citation: Dalton Trans., 2017, Accepted Manuscript
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    Synthesis and crystal structure of Sr3Bi2O6 and structure change in the strontium-bismuth-oxide system

    Y. Yang, J. Li, Y. Yuan, F. Pan, D. Shi, C. Lin, X. Du and J. Sun, Dalton Trans., 2017, Accepted Manuscript , DOI: 10.1039/C7DT04610C

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