data_Nb2PtW
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.29
_cell_length_b   3.29
_cell_length_c   6.28
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Nb2PtW
_chemical_formula_sum   'Nb2 Pt1 W1'
_cell_volume   68.06
_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  0.65  0.65  0.52  1.0
  Nb  Nb1  1  0.65  0.65  0.77  1.0
  Pt  Pt2  1  0.0  0.0  0.14  1.0
  W  W3  1  0.0  0.0  0.0  1.0

data_Nb2PtW
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.65
_cell_length_b   4.65
_cell_length_c   6.28
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Nb2PtW
_chemical_formula_sum   'Nb4 Pt2 W2'
_cell_volume   136.11
_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
  Nb  Nb0  2  0.15  0.5  0.52  1.0
  Nb  Nb1  2  0.15  0.5  0.77  1.0
  Pt  Pt2  2  0.0  0.0  0.14  1.0
  W  W3  2  0.0  0.0  0.0  1.0

Nb Nb Pt W
Nb2WPt crystallizes in the monoclinic Cm space group. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a 2-coordinate geometry to one Nb(2) and one Pt(1) atom. The Nb(1)-Nb(2) bond length is 1.57 Å. The Nb(1)-Pt(1) bond length is 2.88 Å. In the second Nb site, Nb(2) is bonded in a 4-coordinate geometry to one Nb(1) and three equivalent W(1) atoms. There is one shorter (2.20 Å) and two longer (2.83 Å) Nb(2)-W(1) bond lengths. W(1) is bonded in a 2-coordinate geometry to three equivalent Nb(2) and one Pt(1) atom. The W(1)-Pt(1) bond length is 0.90 Å. Pt(1) is bonded in a distorted single-bond geometry to one Nb(1) and one W(1) atom.