data_Nb2CuPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.95
_cell_length_b   3.95
_cell_length_c   4.06
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Nb2CuPt
_chemical_formula_sum   'Nb2 Cu1 Pt1'
_cell_volume   63.24
_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  Nb1  1  0.0  0.97  0.03  1.0
  Nb  Nb2  1  0.97  0.0  0.03  1.0
  Cu  Cu0  1  0.0  0.0  0.0  1.0
  Pt  Pt3  1  0.97  0.97  0.0  1.0

data_Nb2CuPt
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.58
_cell_length_b   5.58
_cell_length_c   4.06
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Nb2CuPt
_chemical_formula_sum   'Nb4 Cu2 Pt2'
_cell_volume   126.48
_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  4  0.49  0.49  0.03  1.0
  Cu  Cu1  2  0.0  0.0  0.0  1.0
  Pt  Pt2  2  0.47  0.5  -0.0  1.0

Nb Nb Cu Pt
Nb2PtCu is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Nb2PtCu clusters. Nb(1) is bonded in a 3-coordinate geometry to one Nb(1), one Pt(1), and one Cu(1) atom. The Nb(1)-Nb(1) bond length is 0.15 Å. The Nb(1)-Pt(1) bond length is 0.16 Å. The Nb(1)-Cu(1) bond length is 0.16 Å. Pt(1) is bonded in a 3-coordinate geometry to two equivalent Nb(1) and one Cu(1) atom. The Pt(1)-Cu(1) bond length is 0.15 Å. Cu(1) is bonded in a 3-coordinate geometry to two equivalent Nb(1) and one Pt(1) atom.