data_TaNiPt2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.91
_cell_length_b   3.91
_cell_length_c   3.9
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TaNiPt2
_chemical_formula_sum   'Ta1 Ni1 Pt2'
_cell_volume   59.75
_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
  Ta  Ta3  1  0.96  0.96  0.0  1.0
  Ni  Ni0  1  0.0  0.0  0.0  1.0
  Pt  Pt1  1  0.0  0.96  0.95  1.0
  Pt  Pt2  1  0.96  0.0  0.95  1.0

data_TaNiPt2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.53
_cell_length_b   5.53
_cell_length_c   3.9
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   TaNiPt2
_chemical_formula_sum   'Ta2 Ni2 Pt4'
_cell_volume   119.51
_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
  Ta  Ta0  2  0.46  0.5  0.0  1.0
  Ni  Ni1  2  0.0  0.0  0.0  1.0
  Pt  Pt2  4  0.48  0.48  0.95  1.0

Ta Ni Pt Pt
TaPt2Ni is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two TaPt2Ni clusters. Ta(1) is bonded in a 3-coordinate geometry to two equivalent Pt(1) and one Ni(1) atom. Both Ta(1)-Pt(1) bond lengths are 0.25 Å. The Ta(1)-Ni(1) bond length is 0.24 Å. Pt(1) is bonded in a 3-coordinate geometry to one Ta(1), one Pt(1), and one Ni(1) atom. The Pt(1)-Pt(1) bond length is 0.24 Å. The Pt(1)-Ni(1) bond length is 0.25 Å. Ni(1) is bonded in a 3-coordinate geometry to one Ta(1) and two equivalent Pt(1) atoms.