data_NbOs4Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.14
_cell_length_b   5.14
_cell_length_c   5.14
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NbOs4Pt
_chemical_formula_sum   'Nb1 Os4 Pt1'
_cell_volume   96.13
_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
  Nb  Nb0  1  0.0  0.0  0.0  1.0
  Os  Os1  1  0.54  0.54  0.73  1.0
  Os  Os2  1  0.54  0.73  0.54  1.0
  Os  Os3  1  0.73  0.54  0.54  1.0
  Os  Os4  1  0.73  0.73  0.73  1.0
  Pt  Pt5  1  0.45  0.45  0.45  1.0

data_NbOs4Pt
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.14
_cell_length_b   5.14
_cell_length_c   12.6
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   NbOs4Pt
_chemical_formula_sum   'Nb3 Os12 Pt3'
_cell_volume   288.4
_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
  Nb  Nb0  3  0.0  0.0  0.0  1.0
  Os  Os1  9  0.06  0.13  0.4  1.0
  Os  Os2  3  0.0  0.0  0.27  1.0
  Pt  Pt3  3  0.0  0.0  0.55  1.0

Nb Os Os Os Os Pt
NbOs4Pt crystallizes in the trigonal R3m space group. Nb(1) is bonded in a 13-coordinate geometry to four equivalent Os(2), six equivalent Os(1), and three equivalent Pt(1) atoms. There are three shorter (3.08 Å) and one longer (3.39 Å) Nb(1)-Os(2) bond length. All Nb(1)-Os(1) bond lengths are 2.84 Å. All Nb(1)-Pt(1) bond lengths are 3.33 Å. There are two inequivalent Os sites. In the first Os site, Os(1) is bonded in a 2-coordinate geometry to two equivalent Nb(1), one Os(2), two equivalent Os(1), and two equivalent Pt(1) atoms. The Os(1)-Os(2) bond length is 1.69 Å. Both Os(1)-Os(1) bond lengths are 0.97 Å. There is one shorter (1.98 Å) and one longer (3.33 Å) Os(1)-Pt(1) bond length. In the second Os site, Os(2) is bonded in a 10-coordinate geometry to four equivalent Nb(1), three equivalent Os(1), and three equivalent Pt(1) atoms. All Os(2)-Pt(1) bond lengths are 3.05 Å. Pt(1) is bonded in a 12-coordinate geometry to three equivalent Nb(1), three equivalent Os(2), and six equivalent Os(1) atoms.