data_Hf2MgPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.2
_cell_length_b   5.2
_cell_length_c   3.02
_cell_angle_alpha   91.07
_cell_angle_beta   91.07
_cell_angle_gamma   109.77
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Hf2MgPt
_chemical_formula_sum   'Hf2 Mg1 Pt1'
_cell_volume   76.89
_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
  Hf  Hf0  1  0.45  0.87  0.51  1.0
  Hf  Hf1  1  0.45  0.13  0.51  1.0
  Mg  Mg2  1  0.0  0.0  0.0  1.0
  Pt  Pt3  1  0.99  0.0  0.0  1.0

data_Hf2MgPt
_symmetry_space_group_name_H-M   Pm
_cell_length_a   5.2
_cell_length_b   3.02
_cell_length_c   5.2
_cell_angle_alpha   90.0
_cell_angle_beta   109.77
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   Hf2MgPt
_chemical_formula_sum   'Hf2 Mg1 Pt1'
_cell_volume   76.93
_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
  Hf  Hf0  1  0.45  0.5  0.13  1.0
  Hf  Hf1  1  0.45  0.5  0.87  1.0
  Mg  Mg2  1  0.0  0.0  0.0  1.0
  Pt  Pt3  1  0.99  0.0  0.0  1.0

Hf Hf Mg Pt
MgPt(Hf)2 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one magnesium;platinum molecule and one Hf cluster. In the Hf cluster, there are two inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a 1-coordinate geometry to one Hf(2) atom. The Hf(1)-Hf(2) bond length is 1.33 Å. In the second Hf site, Hf(2) is bonded in a single-bond geometry to one Hf(1) atom.