The material structure described by Na3Ca is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Na(1) is bonded to eight equivalent Na(1) and four equivalent Ca(1) atoms to form NaNa8Ca4 cuboctahedra that share corners with twelve equivalent Na(1)Na8Ca4 cuboctahedra, edges with eight equivalent Ca(1)Na12 cuboctahedra, edges with sixteen equivalent Na(1)Na8Ca4 cuboctahedra, faces with four equivalent Ca(1)Na12 cuboctahedra, and faces with fourteen equivalent Na(1)Na8Ca4 cuboctahedra. Ca(1) is bonded to twelve equivalent Na(1) atoms to form CaNa12 cuboctahedra that share corners with twelve equivalent Ca(1)Na12 cuboctahedra, edges with twenty-four equivalent Na(1)Na8Ca4 cuboctahedra, faces with six equivalent Ca(1)Na12 cuboctahedra, and faces with twelve equivalent Na(1)Na8Ca4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na3Ca
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.355
_cell_length_b   5.355
_cell_length_c   5.355
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   153.528
_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
  Na  Na0  1  0.000  0.500  0.500  1.0
  Na  Na1  1  0.500  0.000  0.500  1.0
  Na  Na2  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 material structure described by Na3Ca is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Na(1) is bonded to eight equivalent Na(1) and four equivalent Ca(1) atoms to form NaNa8Ca4 cuboctahedra that share corners with twelve equivalent Na(1)Na8Ca4 cuboctahedra, edges with eight equivalent Ca(1)Na12 cuboctahedra, edges with sixteen equivalent Na(1)Na8Ca4 cuboctahedra, faces with four equivalent Ca(1)Na12 cuboctahedra, and faces with fourteen equivalent Na(1)Na8Ca4 cuboctahedra. Ca(1) is bonded to twelve equivalent Na(1) atoms to form CaNa12 cuboctahedra that share corners with twelve equivalent Ca(1)Na12 cuboctahedra, edges with twenty-four equivalent Na(1)Na8Ca4 cuboctahedra, faces with six equivalent Ca(1)Na12 cuboctahedra, and faces with twelve equivalent Na(1)Na8Ca4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na3Ca
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.355
_cell_length_b   5.355
_cell_length_c   5.355
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   153.528
_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
  Na  Na0  1  0.000  0.500  0.500  1.0
  Na  Na1  1  0.500  0.000  0.500  1.0
  Na  Na2  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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