data_HfMgMn2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.24
_cell_length_b   3.24
_cell_length_c   6.24
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HfMgMn2
_chemical_formula_sum   'Hf1 Mg1 Mn2'
_cell_volume   65.56
_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  0.0  0.0  0.12  1.0
  Mg  Mg1  1  0.0  0.0  0.0  1.0
  Mn  Mn2  1  0.62  0.62  0.64  1.0
  Mn  Mn3  1  0.62  0.62  0.6  1.0

data_HfMgMn2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.58
_cell_length_b   4.58
_cell_length_c   6.24
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   HfMgMn2
_chemical_formula_sum   'Hf2 Mg2 Mn4'
_cell_volume   131.13
_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
  Hf  Hf0  2  0.0  0.0  0.12  1.0
  Mg  Mg1  2  0.0  0.0  0.0  1.0
  Mn  Mn2  2  0.12  0.5  0.6  1.0
  Mn  Mn3  2  0.12  0.5  0.64  1.0

Hf Mg Mn Mn
Hf Mg Mn Mn 0 1 o o o 2 3 o o o 
Mg(Hf)(Mn)2 is High Pressure Cadmuum Telluride structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two manganese molecules and two Mg(Hf) clusters. In each Mg(Hf) cluster, Mg(1) is bonded in a distorted single-bond geometry to one Hf(1) atom. The Mg(1)-Hf(1) bond length is 0.76 Å. Hf(1) is bonded in a single-bond geometry to one Mg(1) atom.