The crystal structure described by Mg2Ca crystallizes in the tetragonal I4/mmm space group. Ca(1) is bonded in a distorted body-centered cubic geometry to eight equivalent Mg(1) atoms. Mg(1) is bonded in a distorted body-centered cubic geometry to four equivalent Ca(1) and four equivalent Mg(1) atoms. is represented by the CIF file [CIF]
data_CaMg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.638
_cell_length_b   6.638
_cell_length_c   6.638
_cell_angle_alpha   147.502
_cell_angle_beta   147.502
_cell_angle_gamma   46.622
_symmetry_Int_Tables_number   1
_cell_volume   84.145
_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
  Ca  Ca0  1  0.500  0.500  0.000  1.0
  Mg  Mg1  1  0.816  0.816  0.000  1.0
  Mg  Mg2  1  0.184  0.184  0.000  1.0
[/CIF]
.
The crystal structure described by Mg2Ca crystallizes in the tetragonal I4/mmm space group. Ca(1) is bonded in a distorted body-centered cubic geometry to eight equivalent Mg(1) atoms. Mg(1) is bonded in a distorted body-centered cubic geometry to four equivalent Ca(1) and four equivalent Mg(1) atoms. is represented by the CIF file [CIF]
data_CaMg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.638
_cell_length_b   6.638
_cell_length_c   6.638
_cell_angle_alpha   147.502
_cell_angle_beta   147.502
_cell_angle_gamma   46.622
_symmetry_Int_Tables_number   1
_cell_volume   84.145
_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
  Ca  Ca0  1  0.500  0.500  0.000  1.0
  Mg  Mg1  1  0.816  0.816  0.000  1.0
  Mg  Mg2  1  0.184  0.184  0.000  1.0
[/CIF]
.