The crystal structure described by Ca2Mg crystallizes in the orthorhombic Cmcm space group. Ca(1) is bonded to seven equivalent Ca(1) and five equivalent Mg(1) atoms to form a mixture of distorted edge, corner, and face-sharing CaCa7Mg5 cuboctahedra. Mg(1) is bonded in a 10-coordinate geometry to ten equivalent Ca(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ca2Mg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.336
_cell_length_b   6.336
_cell_length_c   5.945
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.257
_symmetry_Int_Tables_number   1
_cell_volume   206.179
_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  0.160  0.479  0.750  1.0
  Ca  Ca1  1  0.479  0.160  0.750  1.0
  Ca  Ca2  1  0.521  0.840  0.250  1.0
  Ca  Ca3  1  0.840  0.521  0.250  1.0
  Mg  Mg4  1  0.834  0.834  0.750  1.0
  Mg  Mg5  1  0.166  0.166  0.250  1.0
[/CIF]
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The crystal structure described by Ca2Mg crystallizes in the orthorhombic Cmcm space group. Ca(1) is bonded to seven equivalent Ca(1) and five equivalent Mg(1) atoms to form a mixture of distorted edge, corner, and face-sharing CaCa7Mg5 cuboctahedra. Mg(1) is bonded in a 10-coordinate geometry to ten equivalent Ca(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ca2Mg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.336
_cell_length_b   6.336
_cell_length_c   5.945
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.257
_symmetry_Int_Tables_number   1
_cell_volume   206.179
_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  0.160  0.479  0.750  1.0
  Ca  Ca1  1  0.479  0.160  0.750  1.0
  Ca  Ca2  1  0.521  0.840  0.250  1.0
  Ca  Ca3  1  0.840  0.521  0.250  1.0
  Mg  Mg4  1  0.834  0.834  0.750  1.0
  Mg  Mg5  1  0.166  0.166  0.250  1.0
[/CIF]
.