The crystal structure described by BeLaOs2 crystallizes in the cubic F-43m space group. Be(1) is bonded in a body-centered cubic geometry to four equivalent La(1) and four equivalent Os(2) atoms. La(1) is bonded in a distorted body-centered cubic geometry to four equivalent Be(1), four equivalent Os(1), and six equivalent Os(2) atoms. There are two inequivalent Os sites. In the first Os site, Os(1) is bonded to four equivalent La(1) and four equivalent Os(2) atoms to form distorted OsLa4Os4 tetrahedra that share corners with twelve equivalent Os(2)La6Be4Os4 tetrahedra, edges with twelve equivalent Os(1)La4Os4 tetrahedra, and faces with four equivalent Os(2)La6Be4Os4 tetrahedra. In the second Os site, Os(2) is bonded to four equivalent Be(1), six equivalent La(1), and four equivalent Os(1) atoms to form distorted OsLa6Be4Os4 tetrahedra that share corners with six equivalent Os(2)La6Be4Os4 tetrahedra, corners with twelve equivalent Os(1)La4Os4 tetrahedra, faces with four equivalent Os(1)La4Os4 tetrahedra, and faces with twelve equivalent Os(2)La6Be4Os4 tetrahedra. is represented by the CIF card [CIF]
data_LaBeOs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.602
_cell_length_b   4.602
_cell_length_c   4.602
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   68.922
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  La  La0  1  0.750  0.750  0.750  1.0
  Be  Be1  1  0.500  0.500  0.500  1.0
  Os  Os2  1  0.000  0.000  0.000  1.0
  Os  Os3  1  0.250  0.250  0.250  1.0
[/CIF]
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The crystal structure described by BeLaOs2 crystallizes in the cubic F-43m space group. Be(1) is bonded in a body-centered cubic geometry to four equivalent La(1) and four equivalent Os(2) atoms. La(1) is bonded in a distorted body-centered cubic geometry to four equivalent Be(1), four equivalent Os(1), and six equivalent Os(2) atoms. There are two inequivalent Os sites. In the first Os site, Os(1) is bonded to four equivalent La(1) and four equivalent Os(2) atoms to form distorted OsLa4Os4 tetrahedra that share corners with twelve equivalent Os(2)La6Be4Os4 tetrahedra, edges with twelve equivalent Os(1)La4Os4 tetrahedra, and faces with four equivalent Os(2)La6Be4Os4 tetrahedra. In the second Os site, Os(2) is bonded to four equivalent Be(1), six equivalent La(1), and four equivalent Os(1) atoms to form distorted OsLa6Be4Os4 tetrahedra that share corners with six equivalent Os(2)La6Be4Os4 tetrahedra, corners with twelve equivalent Os(1)La4Os4 tetrahedra, faces with four equivalent Os(1)La4Os4 tetrahedra, and faces with twelve equivalent Os(2)La6Be4Os4 tetrahedra. is represented by the CIF card [CIF]
data_LaBeOs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.602
_cell_length_b   4.602
_cell_length_c   4.602
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   68.922
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  La  La0  1  0.750  0.750  0.750  1.0
  Be  Be1  1  0.500  0.500  0.500  1.0
  Os  Os2  1  0.000  0.000  0.000  1.0
  Os  Os3  1  0.250  0.250  0.250  1.0
[/CIF]
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