Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Crystal structure, thermal and compositional deformations of β-CsB5O8. / Bubnova, R.; Dinnebier, R. E.; Filatov, S.; Anderson, J.
в: Crystal Research and Technology, Том 42, № 2, 01.02.2007, стр. 143-150.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Crystal structure, thermal and compositional deformations of β-CsB5O8
AU - Bubnova, R.
AU - Dinnebier, R. E.
AU - Filatov, S.
AU - Anderson, J.
PY - 2007/2/1
Y1 - 2007/2/1
N2 - The crystal structure of β-CsB5O8 has been determined from X-ray powder diffraction data using synchrotron radiation: Pbca, a=7.8131(3) Å, b=12.0652(4) Å, c=14.9582(4) Å, Z=8, ρcalc = 2.967 g/cm3, R-p=0.076, R-wp=0.094. β-CsB5O8 was found to be isostructural with β-KB5O8 and P-RbB5O8. The crystal structure consists of a double interlocking framework built up from B-O pentaborate groups. The crystal structure exhibits a highly anisotropic thermal expansion: αa=53, αb=16, αc= 14.10-6/K; the anisotropy may be caused by partial straightening of the screw chains of the pentaborate groups. The similarity of the thermal and compositional (Cs-Rb-K substitution) deformations CsB5O8 is revealed: increasing the radius of the metal by 0.01 Å leads to the same deformations of the crystal structure as increasing the temperature by 35°C.
AB - The crystal structure of β-CsB5O8 has been determined from X-ray powder diffraction data using synchrotron radiation: Pbca, a=7.8131(3) Å, b=12.0652(4) Å, c=14.9582(4) Å, Z=8, ρcalc = 2.967 g/cm3, R-p=0.076, R-wp=0.094. β-CsB5O8 was found to be isostructural with β-KB5O8 and P-RbB5O8. The crystal structure consists of a double interlocking framework built up from B-O pentaborate groups. The crystal structure exhibits a highly anisotropic thermal expansion: αa=53, αb=16, αc= 14.10-6/K; the anisotropy may be caused by partial straightening of the screw chains of the pentaborate groups. The similarity of the thermal and compositional (Cs-Rb-K substitution) deformations CsB5O8 is revealed: increasing the radius of the metal by 0.01 Å leads to the same deformations of the crystal structure as increasing the temperature by 35°C.
KW - Cesium pentaborate
KW - Compositional deformation
KW - Crystal structure
KW - Rietveld refinement
KW - Thermal expansion
UR - http://www.scopus.com/inward/record.url?scp=34547502698&partnerID=8YFLogxK
U2 - 10.1002/crat.200610787
DO - 10.1002/crat.200610787
M3 - Article
AN - SCOPUS:34547502698
VL - 42
SP - 143
EP - 150
JO - Crystal Research and Technology
JF - Crystal Research and Technology
SN - 0232-1300
IS - 2
ER -
ID: 53950861