The crystal structure described by Sr3Ca is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Sr(1) is bonded to eight equivalent Sr(1) and four equivalent Ca(1) atoms to form SrSr8Ca4 cuboctahedra that share corners with twelve equivalent Sr(1)Sr8Ca4 cuboctahedra, edges with eight equivalent Ca(1)Sr12 cuboctahedra, edges with sixteen equivalent Sr(1)Sr8Ca4 cuboctahedra, faces with four equivalent Ca(1)Sr12 cuboctahedra, and faces with fourteen equivalent Sr(1)Sr8Ca4 cuboctahedra. Ca(1) is bonded to twelve equivalent Sr(1) atoms to form CaSr12 cuboctahedra that share corners with twelve equivalent Ca(1)Sr12 cuboctahedra, edges with twenty-four equivalent Sr(1)Sr8Ca4 cuboctahedra, faces with six equivalent Ca(1)Sr12 cuboctahedra, and faces with twelve equivalent Sr(1)Sr8Ca4 cuboctahedra. is represented by the CIF card [CIF]
data_Sr3Ca
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.989
_cell_length_b   5.989
_cell_length_c   5.989
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   214.788
_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  0.000  0.500  0.500  1.0
  Sr  Sr1  1  0.500  0.000  0.500  1.0
  Sr  Sr2  1  0.500  0.500  0.000  1.0
  Ca  Ca3  1  0.000  0.000  0.000  1.0
[/CIF]
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The crystal structure described by Sr3Ca is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Sr(1) is bonded to eight equivalent Sr(1) and four equivalent Ca(1) atoms to form SrSr8Ca4 cuboctahedra that share corners with twelve equivalent Sr(1)Sr8Ca4 cuboctahedra, edges with eight equivalent Ca(1)Sr12 cuboctahedra, edges with sixteen equivalent Sr(1)Sr8Ca4 cuboctahedra, faces with four equivalent Ca(1)Sr12 cuboctahedra, and faces with fourteen equivalent Sr(1)Sr8Ca4 cuboctahedra. Ca(1) is bonded to twelve equivalent Sr(1) atoms to form CaSr12 cuboctahedra that share corners with twelve equivalent Ca(1)Sr12 cuboctahedra, edges with twenty-four equivalent Sr(1)Sr8Ca4 cuboctahedra, faces with six equivalent Ca(1)Sr12 cuboctahedra, and faces with twelve equivalent Sr(1)Sr8Ca4 cuboctahedra. is represented by the CIF card [CIF]
data_Sr3Ca
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.989
_cell_length_b   5.989
_cell_length_c   5.989
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   214.788
_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  0.000  0.500  0.500  1.0
  Sr  Sr1  1  0.500  0.000  0.500  1.0
  Sr  Sr2  1  0.500  0.500  0.000  1.0
  Ca  Ca3  1  0.000  0.000  0.000  1.0
[/CIF]
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