The crystal structure described by Mg2Ga crystallizes in the hexagonal P-62c space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 5-coordinate geometry to one Ga(2) and four equivalent Ga(1) atoms. In the second Mg site, Mg(2) is bonded in a 4-coordinate geometry to two equivalent Ga(1) and two equivalent Ga(2) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(2) is bonded in a 9-coordinate geometry to three equivalent Mg(1) and six equivalent Mg(2) atoms. In the second Ga site, Ga(1) is bonded in a 9-coordinate geometry to three equivalent Mg(2) and six equivalent Mg(1) atoms. is represented by the CIF file [CIF]
data_Mg2Ga
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.649
_cell_length_b   7.649
_cell_length_c   6.983
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   353.791
_cell_formula_units_Z   6
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
  Mg  Mg0  1  0.024  0.625  0.750  1.0
  Mg  Mg1  1  0.375  0.398  0.750  1.0
  Mg  Mg2  1  0.602  0.976  0.750  1.0
  Mg  Mg3  1  0.976  0.602  0.250  1.0
  Mg  Mg4  1  0.398  0.375  0.250  1.0
  Mg  Mg5  1  0.625  0.024  0.250  1.0
  Mg  Mg6  1  0.272  0.000  0.000  1.0
  Mg  Mg7  1  0.728  0.728  0.500  1.0
  Mg  Mg8  1  0.000  0.272  0.500  1.0
  Mg  Mg9  1  0.000  0.272  0.000  1.0
  Mg  Mg10  1  0.728  0.728  0.000  1.0
  Mg  Mg11  1  0.272  0.000  0.500  1.0
  Ga  Ga12  1  0.667  0.333  0.536  1.0
  Ga  Ga13  1  0.667  0.333  0.964  1.0
  Ga  Ga14  1  0.333  0.667  0.464  1.0
  Ga  Ga15  1  0.333  0.667  0.036  1.0
  Ga  Ga16  1  0.000  0.000  0.750  1.0
  Ga  Ga17  1  0.000  0.000  0.250  1.0
[/CIF]
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The crystal structure described by Mg2Ga crystallizes in the hexagonal P-62c space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 5-coordinate geometry to one Ga(2) and four equivalent Ga(1) atoms. In the second Mg site, Mg(2) is bonded in a 4-coordinate geometry to two equivalent Ga(1) and two equivalent Ga(2) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(2) is bonded in a 9-coordinate geometry to three equivalent Mg(1) and six equivalent Mg(2) atoms. In the second Ga site, Ga(1) is bonded in a 9-coordinate geometry to three equivalent Mg(2) and six equivalent Mg(1) atoms. is represented by the CIF file [CIF]
data_Mg2Ga
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.649
_cell_length_b   7.649
_cell_length_c   6.983
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   353.791
_cell_formula_units_Z   6
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
  Mg  Mg0  1  0.024  0.625  0.750  1.0
  Mg  Mg1  1  0.375  0.398  0.750  1.0
  Mg  Mg2  1  0.602  0.976  0.750  1.0
  Mg  Mg3  1  0.976  0.602  0.250  1.0
  Mg  Mg4  1  0.398  0.375  0.250  1.0
  Mg  Mg5  1  0.625  0.024  0.250  1.0
  Mg  Mg6  1  0.272  0.000  0.000  1.0
  Mg  Mg7  1  0.728  0.728  0.500  1.0
  Mg  Mg8  1  0.000  0.272  0.500  1.0
  Mg  Mg9  1  0.000  0.272  0.000  1.0
  Mg  Mg10  1  0.728  0.728  0.000  1.0
  Mg  Mg11  1  0.272  0.000  0.500  1.0
  Ga  Ga12  1  0.667  0.333  0.536  1.0
  Ga  Ga13  1  0.667  0.333  0.964  1.0
  Ga  Ga14  1  0.333  0.667  0.464  1.0
  Ga  Ga15  1  0.333  0.667  0.036  1.0
  Ga  Ga16  1  0.000  0.000  0.750  1.0
  Ga  Ga17  1  0.000  0.000  0.250  1.0
[/CIF]
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