The structure described by Mg3Ru is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a distorted square co-planar geometry to eight equivalent Mg(2) and four equivalent Ru(1) atoms. In the second Mg site, Mg(2) is bonded to four equivalent Mg(1), four equivalent Mg(2), and four equivalent Ru(1) atoms to form distorted MgMg8Ru4 cuboctahedra that share corners with twelve equivalent Mg(2)Mg8Ru4 cuboctahedra, edges with eight equivalent Mg(2)Mg8Ru4 cuboctahedra, edges with eight equivalent Ru(1)Mg12 cuboctahedra, faces with four equivalent Ru(1)Mg12 cuboctahedra, and faces with ten equivalent Mg(2)Mg8Ru4 cuboctahedra. Ru(1) is bonded to four equivalent Mg(1) and eight equivalent Mg(2) atoms to form RuMg12 cuboctahedra that share corners with four equivalent Ru(1)Mg12 cuboctahedra, edges with eight equivalent Ru(1)Mg12 cuboctahedra, edges with sixteen equivalent Mg(2)Mg8Ru4 cuboctahedra, faces with four equivalent Ru(1)Mg12 cuboctahedra, and faces with eight equivalent Mg(2)Mg8Ru4 cuboctahedra. is represented by the CIF file [CIF]
data_Mg3Ru
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.129
_cell_length_b   5.129
_cell_length_c   5.129
_cell_angle_alpha   133.309
_cell_angle_beta   133.309
_cell_angle_gamma   68.169
_symmetry_Int_Tables_number   1
_cell_volume   70.198
_cell_formula_units_Z   1
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  0.500  0.500  0.000  1.0
  Mg  Mg1  1  0.750  0.250  0.500  1.0
  Mg  Mg2  1  0.250  0.750  0.500  1.0
  Ru  Ru3  1  0.000  0.000  0.000  1.0
[/CIF]
.
The structure described by Mg3Ru is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a distorted square co-planar geometry to eight equivalent Mg(2) and four equivalent Ru(1) atoms. In the second Mg site, Mg(2) is bonded to four equivalent Mg(1), four equivalent Mg(2), and four equivalent Ru(1) atoms to form distorted MgMg8Ru4 cuboctahedra that share corners with twelve equivalent Mg(2)Mg8Ru4 cuboctahedra, edges with eight equivalent Mg(2)Mg8Ru4 cuboctahedra, edges with eight equivalent Ru(1)Mg12 cuboctahedra, faces with four equivalent Ru(1)Mg12 cuboctahedra, and faces with ten equivalent Mg(2)Mg8Ru4 cuboctahedra. Ru(1) is bonded to four equivalent Mg(1) and eight equivalent Mg(2) atoms to form RuMg12 cuboctahedra that share corners with four equivalent Ru(1)Mg12 cuboctahedra, edges with eight equivalent Ru(1)Mg12 cuboctahedra, edges with sixteen equivalent Mg(2)Mg8Ru4 cuboctahedra, faces with four equivalent Ru(1)Mg12 cuboctahedra, and faces with eight equivalent Mg(2)Mg8Ru4 cuboctahedra. is represented by the CIF file [CIF]
data_Mg3Ru
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.129
_cell_length_b   5.129
_cell_length_c   5.129
_cell_angle_alpha   133.309
_cell_angle_beta   133.309
_cell_angle_gamma   68.169
_symmetry_Int_Tables_number   1
_cell_volume   70.198
_cell_formula_units_Z   1
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  0.500  0.500  0.000  1.0
  Mg  Mg1  1  0.750  0.250  0.500  1.0
  Mg  Mg2  1  0.250  0.750  0.500  1.0
  Ru  Ru3  1  0.000  0.000  0.000  1.0
[/CIF]
.