Inorganic Chemistry, volume 49, issue 13, pages 6058-6065

Crystal structure and phase transitions in Sr3WO6

King Graham 1
Rozova Marina G 3
Perkisas Tyché 2
Woodward P. R. 1
Van Tendeloo Gustaaf 2
Publication typeJournal Article
Publication date2010-06-09
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor4.6
ISSN00201669, 1520510X
Inorganic Chemistry
Physical and Theoretical Chemistry
Abstract
The crystal structures of the beta and gamma polymorphs of Sr(3)WO(6) and the gamma<-->beta phase transition have been investigated using electron diffraction, synchrotron X-ray powder diffraction, and neutron powder diffraction. The gamma-Sr(3)WO(6) polymorph is stable above T(c) approximately 470 K and adopts a monoclinically distorted double perovskite A(2)BB'O(6) = Sr(2)SrWO(6) structure (space group Cc, a = 10.2363(1)A, b = 17.9007(1)A, c = 11.9717(1)A, beta = 125.585(1)(o) at T = 1373 K, Z = 12, corresponding to a = a(p) + 1/2b(p) - 1/2c(p), b = 3/2b(p) + 3/2c(p), c = -b(p) + c(p), a(p),b(p), c(p), lattice vectors of the parent Fm3m double perovskite structure). Upon cooling it undergoes a continuous phase transition into the triclinically distorted beta-Sr(3)WO(6) phase (space group C1, a = 10.09497(3)A, b = 17.64748(5)A, c = 11.81400(3)A, alpha = 89.5470(2)(o), beta = 125.4529(2)(o), gamma = 90.2889(2)(o) at T = 300 K). Both crystal structures of Sr(3)WO(6) belong to a family of double perovskites with broken corner sharing connectivity of the octahedral framework. A remarkable feature of the gamma-Sr(3)WO(6) structure is a non-cooperative rotation of the WO(6) octahedra. One third of the WO(6) octahedra are rotated by approximately 45 degrees about either the b(p) or the c(p) axis of the parent double perovskite structure. As a result, the WO(6) octahedra do not share corners but instead share edges with the coordination polyhedra of the Sr cations at the B positions increasing their coordination number from 6 to 7 or 8. The crystal structure of the beta-phase is very close to the structure of the gamma-phase; decreasing symmetry upon the gamma-->beta transformation occurs because of unequal octahedral rotation angles about the b(p) and c(p) axes and increasing distortions of the WO(6) octahedra.

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King G. et al. Crystal structure and phase transitions in Sr3WO6 // Inorganic Chemistry. 2010. Vol. 49. No. 13. pp. 6058-6065.
GOST all authors (up to 50) Copy
King G., Abakumov A. M., Hadermann J., Alekseeva A. M., Rozova M. G., Perkisas T., Woodward P. R., Van Tendeloo G., Antipov E. V. Crystal structure and phase transitions in Sr3WO6 // Inorganic Chemistry. 2010. Vol. 49. No. 13. pp. 6058-6065.
RIS |
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TY - JOUR
DO - 10.1021/ic100598v
UR - https://doi.org/10.1021%2Fic100598v
TI - Crystal structure and phase transitions in Sr3WO6
T2 - Inorganic Chemistry
AU - Alekseeva, Anastasiya M
AU - Rozova, Marina G
AU - Perkisas, Tyché
AU - Van Tendeloo, Gustaaf
AU - King, Graham
AU - Abakumov, Artem M.
AU - Hadermann, Joke
AU - Woodward, P. R.
AU - Antipov, Evgeny V.
PY - 2010
DA - 2010/06/09 00:00:00
PB - American Chemical Society (ACS)
SP - 6058-6065
IS - 13
VL - 49
SN - 0020-1669
SN - 1520-510X
ER -
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@article{2010_King,
author = {Anastasiya M Alekseeva and Marina G Rozova and Tyché Perkisas and Gustaaf Van Tendeloo and Graham King and Artem M. Abakumov and Joke Hadermann and P. R. Woodward and Evgeny V. Antipov},
title = {Crystal structure and phase transitions in Sr3WO6},
journal = {Inorganic Chemistry},
year = {2010},
volume = {49},
publisher = {American Chemical Society (ACS)},
month = {jun},
url = {https://doi.org/10.1021%2Fic100598v},
number = {13},
pages = {6058--6065},
doi = {10.1021/ic100598v}
}
MLA
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King, Graham, et al. “Crystal structure and phase transitions in Sr3WO6.” Inorganic Chemistry, vol. 49, no. 13, Jun. 2010, pp. 6058-6065. https://doi.org/10.1021%2Fic100598v.
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