The crystal structure described by KSr3 is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. K(1) is bonded to four equivalent Sr(2) and eight equivalent Sr(1) atoms to form KSr12 cuboctahedra that share corners with four equivalent K(1)Sr12 cuboctahedra, corners with eight equivalent Sr(2)K4Sr8 cuboctahedra, edges with eight equivalent K(1)Sr12 cuboctahedra, edges with sixteen equivalent Sr(1)K4Sr8 cuboctahedra, faces with four equivalent K(1)Sr12 cuboctahedra, faces with six equivalent Sr(2)K4Sr8 cuboctahedra, and faces with eight equivalent Sr(1)K4Sr8 cuboctahedra. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to four equivalent K(1), four equivalent Sr(1), and four equivalent Sr(2) atoms to form SrK4Sr8 cuboctahedra that share corners with twelve equivalent Sr(1)K4Sr8 cuboctahedra, edges with eight equivalent K(1)Sr12 cuboctahedra, edges with eight equivalent Sr(1)K4Sr8 cuboctahedra, edges with eight equivalent Sr(2)K4Sr8 cuboctahedra, faces with four equivalent K(1)Sr12 cuboctahedra, faces with four equivalent Sr(2)K4Sr8 cuboctahedra, and faces with ten equivalent Sr(1)K4Sr8 cuboctahedra. In the second Sr site, Sr(2) is bonded to four equivalent K(1) and eight equivalent Sr(1) atoms to form SrK4Sr8 cuboctahedra that share corners with four equivalent Sr(2)K4Sr8 cuboctahedra, corners with eight equivalent K(1)Sr12 cuboctahedra, edges with eight equivalent Sr(2)K4Sr8 cuboctahedra, edges with sixteen equivalent Sr(1)K4Sr8 cuboctahedra, faces with four equivalent Sr(2)K4Sr8 cuboctahedra, faces with six equivalent K(1)Sr12 cuboctahedra, and faces with eight equivalent Sr(1)K4Sr8 cuboctahedra. is represented by the CIF file [CIF]
data_KSr3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.657
_cell_length_b   7.657
_cell_length_c   7.657
_cell_angle_alpha   133.378
_cell_angle_beta   133.378
_cell_angle_gamma   68.062
_symmetry_Int_Tables_number   1
_cell_volume   233.050
_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
  K  K0  1  0.000  0.000  0.000  1.0
  Sr  Sr1  1  0.750  0.250  0.500  1.0
  Sr  Sr2  1  0.250  0.750  0.500  1.0
  Sr  Sr3  1  0.500  0.500  0.000  1.0
[/CIF]
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The crystal structure described by KSr3 is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. K(1) is bonded to four equivalent Sr(2) and eight equivalent Sr(1) atoms to form KSr12 cuboctahedra that share corners with four equivalent K(1)Sr12 cuboctahedra, corners with eight equivalent Sr(2)K4Sr8 cuboctahedra, edges with eight equivalent K(1)Sr12 cuboctahedra, edges with sixteen equivalent Sr(1)K4Sr8 cuboctahedra, faces with four equivalent K(1)Sr12 cuboctahedra, faces with six equivalent Sr(2)K4Sr8 cuboctahedra, and faces with eight equivalent Sr(1)K4Sr8 cuboctahedra. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to four equivalent K(1), four equivalent Sr(1), and four equivalent Sr(2) atoms to form SrK4Sr8 cuboctahedra that share corners with twelve equivalent Sr(1)K4Sr8 cuboctahedra, edges with eight equivalent K(1)Sr12 cuboctahedra, edges with eight equivalent Sr(1)K4Sr8 cuboctahedra, edges with eight equivalent Sr(2)K4Sr8 cuboctahedra, faces with four equivalent K(1)Sr12 cuboctahedra, faces with four equivalent Sr(2)K4Sr8 cuboctahedra, and faces with ten equivalent Sr(1)K4Sr8 cuboctahedra. In the second Sr site, Sr(2) is bonded to four equivalent K(1) and eight equivalent Sr(1) atoms to form SrK4Sr8 cuboctahedra that share corners with four equivalent Sr(2)K4Sr8 cuboctahedra, corners with eight equivalent K(1)Sr12 cuboctahedra, edges with eight equivalent Sr(2)K4Sr8 cuboctahedra, edges with sixteen equivalent Sr(1)K4Sr8 cuboctahedra, faces with four equivalent Sr(2)K4Sr8 cuboctahedra, faces with six equivalent K(1)Sr12 cuboctahedra, and faces with eight equivalent Sr(1)K4Sr8 cuboctahedra. is represented by the CIF file [CIF]
data_KSr3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.657
_cell_length_b   7.657
_cell_length_c   7.657
_cell_angle_alpha   133.378
_cell_angle_beta   133.378
_cell_angle_gamma   68.062
_symmetry_Int_Tables_number   1
_cell_volume   233.050
_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
  K  K0  1  0.000  0.000  0.000  1.0
  Sr  Sr1  1  0.750  0.250  0.500  1.0
  Sr  Sr2  1  0.250  0.750  0.500  1.0
  Sr  Sr3  1  0.500  0.500  0.000  1.0
[/CIF]
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