The structure described by MgGd2 crystallizes in the orthorhombic Cmcm space group. Mg(1) is bonded in a body-centered cubic geometry to two equivalent Gd(2) and six equivalent Gd(1) atoms. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 6-coordinate geometry to six equivalent Mg(1) and four equivalent Gd(2) atoms. In the second Gd site, Gd(2) is bonded to two equivalent Mg(1), four equivalent Gd(1), and six equivalent Gd(2) atoms to form a mixture of distorted edge, face, and corner-sharing GdGd10Mg2 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Gd2Mg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.720
_cell_length_b   8.938
_cell_length_c   5.500
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   77.987
_symmetry_Int_Tables_number   1
_cell_volume   178.889
_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
  Gd  Gd0  1  0.978  0.045  0.000  1.0
  Gd  Gd1  1  0.661  0.678  0.000  1.0
  Gd  Gd2  1  0.800  0.399  0.500  1.0
  Gd  Gd3  1  0.117  0.767  0.500  1.0
  Mg  Mg4  1  0.320  0.360  0.000  1.0
  Mg  Mg5  1  0.458  0.084  0.500  1.0
[/CIF]
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The structure described by MgGd2 crystallizes in the orthorhombic Cmcm space group. Mg(1) is bonded in a body-centered cubic geometry to two equivalent Gd(2) and six equivalent Gd(1) atoms. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 6-coordinate geometry to six equivalent Mg(1) and four equivalent Gd(2) atoms. In the second Gd site, Gd(2) is bonded to two equivalent Mg(1), four equivalent Gd(1), and six equivalent Gd(2) atoms to form a mixture of distorted edge, face, and corner-sharing GdGd10Mg2 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Gd2Mg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.720
_cell_length_b   8.938
_cell_length_c   5.500
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   77.987
_symmetry_Int_Tables_number   1
_cell_volume   178.889
_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
  Gd  Gd0  1  0.978  0.045  0.000  1.0
  Gd  Gd1  1  0.661  0.678  0.000  1.0
  Gd  Gd2  1  0.800  0.399  0.500  1.0
  Gd  Gd3  1  0.117  0.767  0.500  1.0
  Mg  Mg4  1  0.320  0.360  0.000  1.0
  Mg  Mg5  1  0.458  0.084  0.500  1.0
[/CIF]
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