data_SrNiHgPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.87
_cell_length_b   4.87
_cell_length_c   4.87
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrNiHgPt
_chemical_formula_sum   'Sr1 Ni1 Hg1 Pt1'
_cell_volume   81.46
_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
  Sr  Sr3  1  0.72  0.72  0.72  1.0
  Ni  Ni1  1  0.0  0.0  0.0  1.0
  Hg  Hg0  1  0.44  0.44  0.44  1.0
  Pt  Pt2  1  0.16  0.16  0.16  1.0

data_SrNiHgPt
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.87
_cell_length_b   4.87
_cell_length_c   11.92
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   SrNiHgPt
_chemical_formula_sum   'Sr3 Ni3 Hg3 Pt3'
_cell_volume   244.38
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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
  Sr  Sr0  3  0.0  0.0  0.28  1.0
  Ni  Ni1  3  0.0  0.0  0.0  1.0
  Hg  Hg2  3  0.0  0.0  0.56  1.0
  Pt  Pt3  3  0.0  0.0  0.84  1.0

Sr Ni Hg Pt
Sr Ni Hg Pt 0 2 o o o 0 2 o o + 0 2 o + o 0 2 + o o 0 3 o + + 0 3 + o + 0 3 + + o 0 1 o + + 0 1 + o + 0 1 + + o 0 1 + + + 1 3 o o o 1 2 o o - 1 2 o - o 1 2 - o o 2 3 o o o 2 3 o o + 2 3 o + o 2 3 + o o 
SrPtNiHg crystallizes in the trigonal R3m space group. Sr(1) is bonded in a 11-coordinate geometry to three equivalent Pt(1), four equivalent Ni(1), and four equivalent Hg(1) atoms. All Sr(1)-Pt(1) bond lengths are 3.09 Å. There are three shorter (2.88 Å) and one longer (3.33 Å) Sr(1)-Ni(1) bond length. There are three shorter (2.88 Å) and one longer (3.33 Å) Sr(1)-Hg(1) bond length. Pt(1) is bonded in a single-bond geometry to three equivalent Sr(1), one Ni(1), and four equivalent Hg(1) atoms. The Pt(1)-Ni(1) bond length is 1.92 Å. There are three shorter (2.88 Å) and one longer (3.33 Å) Pt(1)-Hg(1) bond length. Ni(1) is bonded in a distorted single-bond geometry to four equivalent Sr(1), one Pt(1), and three equivalent Hg(1) atoms. All Ni(1)-Hg(1) bond lengths are 3.09 Å. Hg(1) is bonded in a 11-coordinate geometry to four equivalent Sr(1), four equivalent Pt(1), and three equivalent Ni(1) atoms.