Encyclopedia of Crystallographic Prototypes

AFLOW Prototype: A2BC4_hR42_167_f_ac_2f-001

This structure originally had the label A2BC4_hR42_167_f_ac_2f. Calls to that address will be redirected here.

If you are using this page, please cite:
D. Hicks, M.J. Mehl, M. Esters, C. Oses, O. Levy, G.L.W. Hart, C. Toher, and S. Curtarolo, The AFLOW Library of Crystallographic Prototypes: Part 3, Comp. Mat. Sci. 199, 110450 (2021). (doi=10.1016/j.commatsci.2021.110450)

Links to this page

https://aflow.org/p/RYPV
or https://aflow.org/p/A2BC4_hR42_167_f_ac_2f-001
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β-BaBO (High Temperature) Structure: A2BC4_hR42_167_f_ac_2f-001





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Prototype BBaO
AFLOW prototype label A2BC4_hR42_167_f_ac_2f-001
ICSD 14376
Pearson symbol hR42
Space group number 167
Space group symbol
AFLOW prototype command aflow --proto=A2BC4_hR42_167_f_ac_2f-001
--params=

  • This is the high-temperature structure of BaBO. Cooling to temperatures between 100-400C it transforms into –BaBO. The principle difference between the two forms is the lack of inversion symmetry in the low-temperature structure.
  • This structure was determined by cooling liquid BaBO to room temperature.


Basis vectors

Lattice coordinates Cartesian coordinates Wyckoff position Atom type
= = (2a) Ba I
= = (2a) Ba I
= = (4c) Ba II
= = (4c) Ba II
= = (4c) Ba II
= = (4c) Ba II
= = (12f) B I
= = (12f) B I
= = (12f) B I
= = (12f) B I
= = (12f) B I
= = (12f) B I
= = (12f) B I
= = (12f) B I
= = (12f) B I
= = (12f) B I
= = (12f) B I
= = (12f) B I
= = (12f) O I
= = (12f) O I
= = (12f) O I
= = (12f) O I
= = (12f) O I
= = (12f) O I
= = (12f) O I
= = (12f) O I
= = (12f) O I
= = (12f) O I
= = (12f) O I
= = (12f) O I
= = (12f) O II
= = (12f) O II
= = (12f) O II
= = (12f) O II
= = (12f) O II
= = (12f) O II
= = (12f) O II
= = (12f) O II
= = (12f) O II
= = (12f) O II
= = (12f) O II
= = (12f) O II

References

  • A. D. Mighell, A. Perloff, and S. Block, The crystal structure of the high temperature form of barium borate, BaOBO, Acta Cryst. 20, 819–823 (1966), doi:10.1107/S0365110X66001920.

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