The material structure described by MgTb4Ru crystallizes in the cubic F-43m space group. Mg(1) is bonded to three equivalent Mg(1), three equivalent Tb(1), three equivalent Tb(2), and three equivalent Tb(3) atoms to form a mixture of face and corner-sharing MgTb9Mg3 cuboctahedra. There are three inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 3-coordinate geometry to three equivalent Mg(1) and three equivalent Ru(1) atoms. In the second Tb site, Tb(2) is bonded in a bent 150 degrees geometry to two equivalent Mg(1) and two equivalent Ru(1) atoms. In the third Tb site, Tb(3) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Mg(1) and two equivalent Ru(1) atoms. Ru(1) is bonded in a 6-coordinate geometry to three equivalent Tb(1), three equivalent Tb(2), and three equivalent Tb(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tb4MgRu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.702
_cell_length_b   9.702
_cell_length_c   9.702
_cell_angle_alpha   59.998
_cell_angle_beta   59.999
_cell_angle_gamma   59.998
_symmetry_Int_Tables_number   1
_cell_volume   645.757
_cell_formula_units_Z   4
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
  Tb  Tb0  1  0.593  0.593  0.593  1.0
  Tb  Tb1  1  0.593  0.593  0.220  1.0
  Tb  Tb2  1  0.593  0.220  0.593  1.0
  Tb  Tb3  1  0.220  0.593  0.593  1.0
  Tb  Tb4  1  0.063  0.437  0.437  1.0
  Tb  Tb5  1  0.437  0.063  0.063  1.0
  Tb  Tb6  1  0.437  0.063  0.437  1.0
  Tb  Tb7  1  0.063  0.437  0.063  1.0
  Tb  Tb8  1  0.437  0.437  0.063  1.0
  Tb  Tb9  1  0.063  0.063  0.437  1.0
  Tb  Tb10  1  0.188  0.812  0.812  1.0
  Tb  Tb11  1  0.812  0.188  0.188  1.0
  Tb  Tb12  1  0.812  0.188  0.812  1.0
  Tb  Tb13  1  0.188  0.812  0.188  1.0
  Tb  Tb14  1  0.812  0.812  0.188  1.0
  Tb  Tb15  1  0.188  0.188  0.812  1.0
  Mg  Mg16  1  0.829  0.829  0.829  1.0
  Mg  Mg17  1  0.829  0.829  0.514  1.0
  Mg  Mg18  1  0.829  0.514  0.829  1.0
  Mg  Mg19  1  0.514  0.829  0.829  1.0
  Ru  Ru20  1  0.389  0.389  0.389  1.0
  Ru  Ru21  1  0.389  0.389  0.834  1.0
  Ru  Ru22  1  0.389  0.834  0.389  1.0
  Ru  Ru23  1  0.834  0.389  0.389  1.0
[/CIF]
.
The material structure described by MgTb4Ru crystallizes in the cubic F-43m space group. Mg(1) is bonded to three equivalent Mg(1), three equivalent Tb(1), three equivalent Tb(2), and three equivalent Tb(3) atoms to form a mixture of face and corner-sharing MgTb9Mg3 cuboctahedra. There are three inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 3-coordinate geometry to three equivalent Mg(1) and three equivalent Ru(1) atoms. In the second Tb site, Tb(2) is bonded in a bent 150 degrees geometry to two equivalent Mg(1) and two equivalent Ru(1) atoms. In the third Tb site, Tb(3) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Mg(1) and two equivalent Ru(1) atoms. Ru(1) is bonded in a 6-coordinate geometry to three equivalent Tb(1), three equivalent Tb(2), and three equivalent Tb(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tb4MgRu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.702
_cell_length_b   9.702
_cell_length_c   9.702
_cell_angle_alpha   59.998
_cell_angle_beta   59.999
_cell_angle_gamma   59.998
_symmetry_Int_Tables_number   1
_cell_volume   645.757
_cell_formula_units_Z   4
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
  Tb  Tb0  1  0.593  0.593  0.593  1.0
  Tb  Tb1  1  0.593  0.593  0.220  1.0
  Tb  Tb2  1  0.593  0.220  0.593  1.0
  Tb  Tb3  1  0.220  0.593  0.593  1.0
  Tb  Tb4  1  0.063  0.437  0.437  1.0
  Tb  Tb5  1  0.437  0.063  0.063  1.0
  Tb  Tb6  1  0.437  0.063  0.437  1.0
  Tb  Tb7  1  0.063  0.437  0.063  1.0
  Tb  Tb8  1  0.437  0.437  0.063  1.0
  Tb  Tb9  1  0.063  0.063  0.437  1.0
  Tb  Tb10  1  0.188  0.812  0.812  1.0
  Tb  Tb11  1  0.812  0.188  0.188  1.0
  Tb  Tb12  1  0.812  0.188  0.812  1.0
  Tb  Tb13  1  0.188  0.812  0.188  1.0
  Tb  Tb14  1  0.812  0.812  0.188  1.0
  Tb  Tb15  1  0.188  0.188  0.812  1.0
  Mg  Mg16  1  0.829  0.829  0.829  1.0
  Mg  Mg17  1  0.829  0.829  0.514  1.0
  Mg  Mg18  1  0.829  0.514  0.829  1.0
  Mg  Mg19  1  0.514  0.829  0.829  1.0
  Ru  Ru20  1  0.389  0.389  0.389  1.0
  Ru  Ru21  1  0.389  0.389  0.834  1.0
  Ru  Ru22  1  0.389  0.834  0.389  1.0
  Ru  Ru23  1  0.834  0.389  0.389  1.0
[/CIF]
.