The structure described by Sr4As2O is (La,Ba)CuO4 structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 6-coordinate geometry to five equivalent As(1) and one O(1) atom. In the second Sr site, Sr(2) is bonded in a distorted linear geometry to four equivalent As(1) and two equivalent O(1) atoms. As(1) is bonded in a 9-coordinate geometry to four equivalent Sr(2) and five equivalent Sr(1) atoms. O(1) is bonded to two equivalent Sr(1) and four equivalent Sr(2) atoms to form corner-sharing OSr6 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF file [CIF]
data_Sr4As2O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.858
_cell_length_b   4.858
_cell_length_c   8.867
_cell_angle_alpha   105.898
_cell_angle_beta   105.898
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   192.898
_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
  Sr  Sr0  1  0.673  0.673  0.347  1.0
  Sr  Sr1  1  0.327  0.327  0.653  1.0
  Sr  Sr2  1  0.000  0.500  0.000  1.0
  Sr  Sr3  1  0.500  0.000  0.000  1.0
  As  As4  1  0.864  0.864  0.728  1.0
  As  As5  1  0.136  0.136  0.272  1.0
  O  O6  1  0.500  0.500  0.000  1.0
[/CIF]
.
The structure described by Sr4As2O is (La,Ba)CuO4 structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 6-coordinate geometry to five equivalent As(1) and one O(1) atom. In the second Sr site, Sr(2) is bonded in a distorted linear geometry to four equivalent As(1) and two equivalent O(1) atoms. As(1) is bonded in a 9-coordinate geometry to four equivalent Sr(2) and five equivalent Sr(1) atoms. O(1) is bonded to two equivalent Sr(1) and four equivalent Sr(2) atoms to form corner-sharing OSr6 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF file [CIF]
data_Sr4As2O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.858
_cell_length_b   4.858
_cell_length_c   8.867
_cell_angle_alpha   105.898
_cell_angle_beta   105.898
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   192.898
_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
  Sr  Sr0  1  0.673  0.673  0.347  1.0
  Sr  Sr1  1  0.327  0.327  0.653  1.0
  Sr  Sr2  1  0.000  0.500  0.000  1.0
  Sr  Sr3  1  0.500  0.000  0.000  1.0
  As  As4  1  0.864  0.864  0.728  1.0
  As  As5  1  0.136  0.136  0.272  1.0
  O  O6  1  0.500  0.500  0.000  1.0
[/CIF]
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