data_Zr2NbHg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.51
_cell_length_b   5.51
_cell_length_c   5.51
_cell_angle_alpha   134.37
_cell_angle_beta   134.37
_cell_angle_gamma   66.51
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Zr2NbHg
_chemical_formula_sum   'Zr2 Nb1 Hg1'
_cell_volume   83.99
_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
  Zr  Zr2  1  0.0  0.14  0.3  1.0
  Zr  Zr3  1  0.0  0.0  0.0  1.0
  Nb  Nb1  1  0.0  0.0  0.6  1.0
  Hg  Hg0  1  0.14  0.0  0.3  1.0

data_Zr2NbHg
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.27
_cell_length_b   4.27
_cell_length_c   5.51
_cell_angle_alpha   112.82
_cell_angle_beta   112.82
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Zr2NbHg
_chemical_formula_sum   'Zr2 Nb1 Hg1'
_cell_volume   83.99
_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
  Zr  Zr0  1  0.0  0.0  0.0  1.0
  Zr  Zr1  1  0.83  0.14  0.83  1.0
  Nb  Nb2  1  0.4  0.0  0.4  1.0
  Hg  Hg3  1  0.7  0.0  0.83  1.0

Zr Zr Nb Hg