The structure described by K2Sr2O3 is Aluminum carbonitride-like structured and crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. Sr(1) is bonded to one O(1) and three equivalent O(2) atoms to form a mixture of corner and edge-sharing SrO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent K(1) and two equivalent Sr(1) atoms to form corner-sharing OK4Sr2 octahedra. The corner-sharing octahedral tilt angles are 53°. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent K(1) and three equivalent Sr(1) atoms. is represented by the CIF file [CIF]
data_K2Sr2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.160
_cell_length_b   7.132
_cell_length_c   7.161
_cell_angle_alpha   61.269
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   320.669
_cell_formula_units_Z   2
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
  K  K0  1  0.346  0.093  0.127  1.0
  K  K1  1  0.154  0.593  0.127  1.0
  K  K2  1  0.846  0.407  0.873  1.0
  K  K3  1  0.654  0.907  0.873  1.0
  Sr  Sr4  1  0.623  0.424  0.338  1.0
  Sr  Sr5  1  0.123  0.076  0.662  1.0
  Sr  Sr6  1  0.877  0.924  0.338  1.0
  Sr  Sr7  1  0.377  0.576  0.662  1.0
  O  O8  1  0.500  0.500  0.000  1.0
  O  O9  1  0.000  0.000  0.000  1.0
  O  O10  1  0.922  0.261  0.352  1.0
  O  O11  1  0.422  0.239  0.648  1.0
  O  O12  1  0.578  0.761  0.352  1.0
  O  O13  1  0.078  0.739  0.648  1.0
[/CIF]
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The structure described by K2Sr2O3 is Aluminum carbonitride-like structured and crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. Sr(1) is bonded to one O(1) and three equivalent O(2) atoms to form a mixture of corner and edge-sharing SrO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent K(1) and two equivalent Sr(1) atoms to form corner-sharing OK4Sr2 octahedra. The corner-sharing octahedral tilt angles are 53°. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent K(1) and three equivalent Sr(1) atoms. is represented by the CIF file [CIF]
data_K2Sr2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.160
_cell_length_b   7.132
_cell_length_c   7.161
_cell_angle_alpha   61.269
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   320.669
_cell_formula_units_Z   2
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
  K  K0  1  0.346  0.093  0.127  1.0
  K  K1  1  0.154  0.593  0.127  1.0
  K  K2  1  0.846  0.407  0.873  1.0
  K  K3  1  0.654  0.907  0.873  1.0
  Sr  Sr4  1  0.623  0.424  0.338  1.0
  Sr  Sr5  1  0.123  0.076  0.662  1.0
  Sr  Sr6  1  0.877  0.924  0.338  1.0
  Sr  Sr7  1  0.377  0.576  0.662  1.0
  O  O8  1  0.500  0.500  0.000  1.0
  O  O9  1  0.000  0.000  0.000  1.0
  O  O10  1  0.922  0.261  0.352  1.0
  O  O11  1  0.422  0.239  0.648  1.0
  O  O12  1  0.578  0.761  0.352  1.0
  O  O13  1  0.078  0.739  0.648  1.0
[/CIF]
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