The material described by MgCa crystallizes in the orthorhombic Pmmn space group. Ca(1) is bonded to six equivalent Ca(1) and six equivalent Mg(1) atoms to form a mixture of distorted face, corner, and edge-sharing CaCa6Mg6 cuboctahedra. Mg(1) is bonded in a distorted hexagonal planar geometry to six equivalent Ca(1) atoms. is represented by the CIF file [CIF]
data_CaMg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.693
_cell_length_b   5.810
_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   128.486
_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
  Ca  Ca0  1  0.000  0.000  0.093  1.0
  Ca  Ca1  1  0.500  0.500  0.907  1.0
  Mg  Mg2  1  0.500  0.000  0.585  1.0
  Mg  Mg3  1  0.000  0.500  0.415  1.0
[/CIF]
.
The material described by MgCa crystallizes in the orthorhombic Pmmn space group. Ca(1) is bonded to six equivalent Ca(1) and six equivalent Mg(1) atoms to form a mixture of distorted face, corner, and edge-sharing CaCa6Mg6 cuboctahedra. Mg(1) is bonded in a distorted hexagonal planar geometry to six equivalent Ca(1) atoms. is represented by the CIF file [CIF]
data_CaMg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.693
_cell_length_b   5.810
_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   128.486
_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
  Ca  Ca0  1  0.000  0.000  0.093  1.0
  Ca  Ca1  1  0.500  0.500  0.907  1.0
  Mg  Mg2  1  0.500  0.000  0.585  1.0
  Mg  Mg3  1  0.000  0.500  0.415  1.0
[/CIF]
.