data_MgMnPt2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.83
_cell_length_b   2.83
_cell_length_c   8.19
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   91.74
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgMnPt2
_chemical_formula_sum   'Mg1 Mn1 Pt2'
_cell_volume   65.42
_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  0.0  0.0  0.2  1.0
  Mn  Mn1  1  0.97  0.0  0.87  1.0
  Pt  Pt2  1  0.0  0.0  0.12  1.0
  Pt  Pt3  1  0.97  0.0  0.11  1.0

data_MgMnPt2
_symmetry_space_group_name_H-M   Pm
_cell_length_a   2.83
_cell_length_b   2.83
_cell_length_c   8.19
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   MgMnPt2
_chemical_formula_sum   'Mg1 Mn1 Pt2'
_cell_volume   65.45
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '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  0.0  0.0  0.2  1.0
  Mn  Mn1  1  0.97  0.0  0.87  1.0
  Pt  Pt2  1  0.0  0.0  0.12  1.0
  Pt  Pt3  1  0.97  0.0  0.11  1.0

Mg Mn Pt Pt
Mg Mn Pt Pt 0 3 - o o 0 2 o o o 1 2 + o + 1 3 o o + 2 3 - o o 
MgMnPt2 crystallizes in the monoclinic Pm space group. The structure is zero-dimensional and consists of one MgMnPt2 cluster. Mg(1) is bonded in a single-bond geometry to one Pt(1) atom. The Mg(1)-Pt(1) bond length is 0.64 Å. Mn(1) is bonded in a single-bond geometry to one Pt(2) atom. The Mn(1)-Pt(2) bond length is 1.97 Å. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a distorted bent 150 degrees geometry to one Mg(1) and one Pt(2) atom. The Pt(1)-Pt(2) bond length is 0.14 Å. In the second Pt site, Pt(2) is bonded in a distorted single-bond geometry to one Mn(1) and one Pt(1) atom.