The crystal structure described by Sm2O crystallizes in the tetragonal P4/mmm space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a linear geometry to two equivalent O(1) atoms. In the second Sm site, Sm(2) is bonded in a square co-planar geometry to four equivalent O(1) atoms. O(1) is bonded to two equivalent Sm(1) and four equivalent Sm(2) atoms to form a mixture of edge and corner-sharing OSm6 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF card [CIF]
data_Sm2O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.551
_cell_length_b   3.551
_cell_length_c   4.982
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   62.824
_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
  Sm  Sm0  1  0.000  0.000  0.500  1.0
  Sm  Sm1  1  0.500  0.500  0.000  1.0
  O  O2  1  0.000  0.000  0.000  1.0
[/CIF]
.
The crystal structure described by Sm2O crystallizes in the tetragonal P4/mmm space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a linear geometry to two equivalent O(1) atoms. In the second Sm site, Sm(2) is bonded in a square co-planar geometry to four equivalent O(1) atoms. O(1) is bonded to two equivalent Sm(1) and four equivalent Sm(2) atoms to form a mixture of edge and corner-sharing OSm6 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF card [CIF]
data_Sm2O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.551
_cell_length_b   3.551
_cell_length_c   4.982
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   62.824
_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
  Sm  Sm0  1  0.000  0.000  0.500  1.0
  Sm  Sm1  1  0.500  0.500  0.000  1.0
  O  O2  1  0.000  0.000  0.000  1.0
[/CIF]
.