data_Mn2NiRu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.58
_cell_length_b   3.58
_cell_length_c   3.62
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mn2NiRu
_chemical_formula_sum   'Mn2 Ni1 Ru1'
_cell_volume   46.24
_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
  Mn  Mn0  1  0.79  0.0  0.81  1.0
  Mn  Mn1  1  0.0  0.79  0.81  1.0
  Ni  Ni2  1  0.0  0.0  0.0  1.0
  Ru  Ru3  1  0.79  0.79  0.0  1.0

data_Mn2NiRu
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.06
_cell_length_b   5.06
_cell_length_c   3.62
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Mn2NiRu
_chemical_formula_sum   'Mn4 Ni2 Ru2'
_cell_volume   92.48
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Mn  Mn0  4  0.39  0.39  0.81  1.0
  Ni  Ni1  2  0.0  0.0  0.0  1.0
  Ru  Ru2  2  0.29  0.5  0.0  1.0

Mn Mn Ni Ru
Mn2RuNi is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Mn2RuNi clusters. Mn(1) is bonded in a 2-coordinate geometry to one Ru(1) and one Ni(1) atom. The Mn(1)-Ru(1) bond length is 1.03 Å. The Mn(1)-Ni(1) bond length is 1.03 Å. Ru(1) is bonded in a 3-coordinate geometry to two equivalent Mn(1) and one Ni(1) atom. The Ru(1)-Ni(1) bond length is 1.07 Å. Ni(1) is bonded in a 3-coordinate geometry to two equivalent Mn(1) and one Ru(1) atom.