Structure, crystal chemistry and thermal evolution of the δ-Bi2O3-related phase Bi9ReO17

Neeraj Sharma; Ray L. Withers; Kevin S. Knight; Chris D. Ling

doi:10.1016/j.jssc.2009.07.008

Structure, crystal chemistry and thermal evolution of the δ-Bi₂O₃-related phase Bi₉ReO₁₇

Neeraj Sharma^*, Ray L. Withers, Kevin S. Knight, Chris D. Ling

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

The thermal evolution and structural properties of fluorite-related δ-Bi₂O₃-type Bi₉ReO₁₇ were studied with variable temperature neutron powder diffraction, synchrotron X-ray powder diffraction and electron diffraction. The thermodynamically stable room-temperature crystal structure is monoclinic P2₁/c, a=9.89917(5), b=19.70356(10), c=11.61597(6) Å, β=125.302(2)° (R_p=3.51%, wR_p=3.60%) and features clusters of ReO₄ tetrahedra embedded in a distorted Bi-O fluorite-like network. This phase is stable up to 725 °C whereupon it transforms to a disordered δ-Bi₂O₃-like phase, which was modeled with δ-Bi₂O₃ in cubic Fm3̄m with a=5.7809(1) Å (R_p=2.49%, wR_p=2.44%) at 750 °C. Quenching from above 725 °C leads to a different phase, the structure of which has not been solved but appears on the basis of spectroscopic evidence to contain both ReO₄ tetrahedra and ReO₆ octahedra. Crown

Original language	English
Pages (from-to)	2468-2474
Number of pages	7
Journal	Journal of Solid State Chemistry
Volume	182
Issue number	9
DOIs	https://doi.org/10.1016/j.jssc.2009.07.008
Publication status	Published - Sept 2009

Access to Document

10.1016/j.jssc.2009.07.008

Cite this

@article{dd06dfc472cc4110b4fc0babfb7fda6c,

title = "Structure, crystal chemistry and thermal evolution of the δ-Bi2O3-related phase Bi9ReO17",

abstract = "The thermal evolution and structural properties of fluorite-related δ-Bi2O3-type Bi9ReO17 were studied with variable temperature neutron powder diffraction, synchrotron X-ray powder diffraction and electron diffraction. The thermodynamically stable room-temperature crystal structure is monoclinic P21/c, a=9.89917(5), b=19.70356(10), c=11.61597(6) {\AA}, β=125.302(2)° (Rp=3.51\%, wRp=3.60\%) and features clusters of ReO4 tetrahedra embedded in a distorted Bi-O fluorite-like network. This phase is stable up to 725 °C whereupon it transforms to a disordered δ-Bi2O3-like phase, which was modeled with δ-Bi2O3 in cubic Fm{\=3}m with a=5.7809(1) {\AA} (Rp=2.49\%, wRp=2.44\%) at 750 °C. Quenching from above 725 °C leads to a different phase, the structure of which has not been solved but appears on the basis of spectroscopic evidence to contain both ReO4 tetrahedra and ReO6 octahedra. Crown",

keywords = "Bismuth rhenium oxide, Delta-BiO, Neutron powder diffraction, Phase transition, Rietveld-refinement, Synchrotron X-ray powder diffraction",

author = "Neeraj Sharma and Withers, \{Ray L.\} and Knight, \{Kevin S.\} and Ling, \{Chris D.\}",

year = "2009",

month = sep,

doi = "10.1016/j.jssc.2009.07.008",

language = "English",

volume = "182",

pages = "2468--2474",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

number = "9",

}

TY - JOUR

T1 - Structure, crystal chemistry and thermal evolution of the δ-Bi2O3-related phase Bi9ReO17

AU - Sharma, Neeraj

AU - Withers, Ray L.

AU - Knight, Kevin S.

AU - Ling, Chris D.

PY - 2009/9

Y1 - 2009/9

N2 - The thermal evolution and structural properties of fluorite-related δ-Bi2O3-type Bi9ReO17 were studied with variable temperature neutron powder diffraction, synchrotron X-ray powder diffraction and electron diffraction. The thermodynamically stable room-temperature crystal structure is monoclinic P21/c, a=9.89917(5), b=19.70356(10), c=11.61597(6) Å, β=125.302(2)° (Rp=3.51%, wRp=3.60%) and features clusters of ReO4 tetrahedra embedded in a distorted Bi-O fluorite-like network. This phase is stable up to 725 °C whereupon it transforms to a disordered δ-Bi2O3-like phase, which was modeled with δ-Bi2O3 in cubic Fm3̄m with a=5.7809(1) Å (Rp=2.49%, wRp=2.44%) at 750 °C. Quenching from above 725 °C leads to a different phase, the structure of which has not been solved but appears on the basis of spectroscopic evidence to contain both ReO4 tetrahedra and ReO6 octahedra. Crown

AB - The thermal evolution and structural properties of fluorite-related δ-Bi2O3-type Bi9ReO17 were studied with variable temperature neutron powder diffraction, synchrotron X-ray powder diffraction and electron diffraction. The thermodynamically stable room-temperature crystal structure is monoclinic P21/c, a=9.89917(5), b=19.70356(10), c=11.61597(6) Å, β=125.302(2)° (Rp=3.51%, wRp=3.60%) and features clusters of ReO4 tetrahedra embedded in a distorted Bi-O fluorite-like network. This phase is stable up to 725 °C whereupon it transforms to a disordered δ-Bi2O3-like phase, which was modeled with δ-Bi2O3 in cubic Fm3̄m with a=5.7809(1) Å (Rp=2.49%, wRp=2.44%) at 750 °C. Quenching from above 725 °C leads to a different phase, the structure of which has not been solved but appears on the basis of spectroscopic evidence to contain both ReO4 tetrahedra and ReO6 octahedra. Crown

KW - Bismuth rhenium oxide

KW - Delta-BiO

KW - Neutron powder diffraction

KW - Phase transition

KW - Rietveld-refinement

KW - Synchrotron X-ray powder diffraction

UR - https://www.scopus.com/pages/publications/69249203527

U2 - 10.1016/j.jssc.2009.07.008

DO - 10.1016/j.jssc.2009.07.008

M3 - Article

SN - 0022-4596

VL - 182

SP - 2468

EP - 2474

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

IS - 9

ER -

Structure, crystal chemistry and thermal evolution of the δ-Bi₂O₃-related phase Bi₉ReO₁₇

Abstract

Access to Document

Other files and links

Fingerprint

Cite this