data_FeHgPt2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.8
_cell_length_b   4.8
_cell_length_c   5.03
_cell_angle_alpha   100.88
_cell_angle_beta   100.88
_cell_angle_gamma   34.86
_symmetry_Int_Tables_number   1
_chemical_formula_structural   FeHgPt2
_chemical_formula_sum   'Fe1 Hg1 Pt2'
_cell_volume   65.1
_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
  Fe  Fe0  1  0.0  0.0  0.0  1.0
  Hg  Hg1  1  0.09  0.0  0.47  1.0
  Pt  Pt2  1  0.62  0.0  0.79  1.0
  Pt  Pt3  1  0.56  0.0  0.14  1.0

data_FeHgPt2
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.88
_cell_length_b   4.8
_cell_length_c   5.03
_cell_angle_alpha   100.88
_cell_angle_beta   90.0
_cell_angle_gamma   107.43
_symmetry_Int_Tables_number   1
_chemical_formula_structural   FeHgPt2
_chemical_formula_sum   'Fe1 Hg1 Pt2'
_cell_volume   65.1
_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
  Fe  Fe0  1  0.0  0.0  0.0  1.0
  Hg  Hg1  1  0.0  0.91  0.53  1.0
  Pt  Pt2  1  0.0  0.38  0.21  1.0
  Pt  Pt3  1  0.0  0.44  0.86  1.0

Fe Hg Pt Pt
FePt2Hg crystallizes in the triclinic P1 space group. Fe(1) is bonded in a 1-coordinate geometry to one Pt(1), two equivalent Pt(2), and two equivalent Hg(1) atoms. The Fe(1)-Pt(1) bond length is 1.94 Å. There is one shorter (2.38 Å) and one longer (2.63 Å) Fe(1)-Pt(2) bond length. There is one shorter (2.31 Å) and one longer (2.79 Å) Fe(1)-Hg(1) bond length. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 1-coordinate geometry to one Fe(1), one Pt(2), and two equivalent Hg(1) atoms. The Pt(1)-Pt(2) bond length is 1.86 Å. There is one shorter (2.75 Å) and one longer (3.02 Å) Pt(1)-Hg(1) bond length. In the second Pt site, Pt(2) is bonded in a 4-coordinate geometry to two equivalent Fe(1), one Pt(1), and two equivalent Hg(1) atoms. There is one shorter (2.75 Å) and one longer (3.02 Å) Pt(2)-Hg(1) bond length. Hg(1) is bonded in a 8-coordinate geometry to two equivalent Fe(1), two equivalent Pt(1), two equivalent Pt(2), and two equivalent Hg(1) atoms. Both Hg(1)-Hg(1) bond lengths are 2.88 Å.