The crystal structure described by K3Sr is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. K(1) is bonded to eight equivalent K(1) and four equivalent Sr(1) atoms to form KK8Sr4 cuboctahedra that share corners with four equivalent Sr(1)K12 cuboctahedra, corners with fourteen equivalent K(1)K8Sr4 cuboctahedra, edges with six equivalent Sr(1)K12 cuboctahedra, edges with twelve equivalent K(1)K8Sr4 cuboctahedra, faces with four equivalent Sr(1)K12 cuboctahedra, and faces with sixteen equivalent K(1)K8Sr4 cuboctahedra. Sr(1) is bonded to twelve equivalent K(1) atoms to form SrK12 cuboctahedra that share corners with six equivalent Sr(1)K12 cuboctahedra, corners with twelve equivalent K(1)K8Sr4 cuboctahedra, edges with eighteen equivalent K(1)K8Sr4 cuboctahedra, faces with eight equivalent Sr(1)K12 cuboctahedra, and faces with twelve equivalent K(1)K8Sr4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_K3Sr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.207
_cell_length_b   9.207
_cell_length_c   7.511
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   551.354
_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  0.168  0.336  0.250  1.0
  K  K1  1  0.664  0.832  0.250  1.0
  K  K2  1  0.168  0.832  0.250  1.0
  K  K3  1  0.832  0.664  0.750  1.0
  K  K4  1  0.336  0.168  0.750  1.0
  K  K5  1  0.832  0.168  0.750  1.0
  Sr  Sr6  1  0.333  0.667  0.750  1.0
  Sr  Sr7  1  0.667  0.333  0.250  1.0
[/CIF]
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The crystal structure described by K3Sr is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. K(1) is bonded to eight equivalent K(1) and four equivalent Sr(1) atoms to form KK8Sr4 cuboctahedra that share corners with four equivalent Sr(1)K12 cuboctahedra, corners with fourteen equivalent K(1)K8Sr4 cuboctahedra, edges with six equivalent Sr(1)K12 cuboctahedra, edges with twelve equivalent K(1)K8Sr4 cuboctahedra, faces with four equivalent Sr(1)K12 cuboctahedra, and faces with sixteen equivalent K(1)K8Sr4 cuboctahedra. Sr(1) is bonded to twelve equivalent K(1) atoms to form SrK12 cuboctahedra that share corners with six equivalent Sr(1)K12 cuboctahedra, corners with twelve equivalent K(1)K8Sr4 cuboctahedra, edges with eighteen equivalent K(1)K8Sr4 cuboctahedra, faces with eight equivalent Sr(1)K12 cuboctahedra, and faces with twelve equivalent K(1)K8Sr4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_K3Sr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.207
_cell_length_b   9.207
_cell_length_c   7.511
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   551.354
_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  0.168  0.336  0.250  1.0
  K  K1  1  0.664  0.832  0.250  1.0
  K  K2  1  0.168  0.832  0.250  1.0
  K  K3  1  0.832  0.664  0.750  1.0
  K  K4  1  0.336  0.168  0.750  1.0
  K  K5  1  0.832  0.168  0.750  1.0
  Sr  Sr6  1  0.333  0.667  0.750  1.0
  Sr  Sr7  1  0.667  0.333  0.250  1.0
[/CIF]
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