The material described by Rb3Mg crystallizes in the hexagonal P6_3/mmc space group. Rb(1) is bonded in a 10-coordinate geometry to eight equivalent Rb(1) and two equivalent Mg(1) atoms. Mg(1) is bonded in a 6-coordinate geometry to six equivalent Rb(1) atoms. is represented by the CIF card [CIF]
data_Rb3Mg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.226
_cell_length_b   9.226
_cell_length_c   7.053
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   519.937
_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
  Rb  Rb0  1  0.177  0.354  0.250  1.0
  Rb  Rb1  1  0.177  0.823  0.250  1.0
  Rb  Rb2  1  0.646  0.823  0.250  1.0
  Rb  Rb3  1  0.354  0.177  0.750  1.0
  Rb  Rb4  1  0.823  0.177  0.750  1.0
  Rb  Rb5  1  0.823  0.646  0.750  1.0
  Mg  Mg6  1  0.667  0.333  0.250  1.0
  Mg  Mg7  1  0.333  0.667  0.750  1.0
[/CIF]
.
The material described by Rb3Mg crystallizes in the hexagonal P6_3/mmc space group. Rb(1) is bonded in a 10-coordinate geometry to eight equivalent Rb(1) and two equivalent Mg(1) atoms. Mg(1) is bonded in a 6-coordinate geometry to six equivalent Rb(1) atoms. is represented by the CIF card [CIF]
data_Rb3Mg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.226
_cell_length_b   9.226
_cell_length_c   7.053
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   519.937
_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
  Rb  Rb0  1  0.177  0.354  0.250  1.0
  Rb  Rb1  1  0.177  0.823  0.250  1.0
  Rb  Rb2  1  0.646  0.823  0.250  1.0
  Rb  Rb3  1  0.354  0.177  0.750  1.0
  Rb  Rb4  1  0.823  0.177  0.750  1.0
  Rb  Rb5  1  0.823  0.646  0.750  1.0
  Mg  Mg6  1  0.667  0.333  0.250  1.0
  Mg  Mg7  1  0.333  0.667  0.750  1.0
[/CIF]
.