data_NiAs2Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.01
_cell_length_b   3.01
_cell_length_c   7.45
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   92.49
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NiAs2Pt
_chemical_formula_sum   'Ni1 As2 Pt1'
_cell_volume   67.41
_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
  Ni  Ni2  1  0.0  0.0  0.79  1.0
  As  As0  1  0.0  0.0  0.46  1.0
  As  As1  1  0.08  0.0  0.96  1.0
  Pt  Pt3  1  0.08  0.0  0.95  1.0

data_NiAs2Pt
_symmetry_space_group_name_H-M   Pm
_cell_length_a   3.01
_cell_length_b   3.01
_cell_length_c   7.45
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   NiAs2Pt
_chemical_formula_sum   'Ni1 As2 Pt1'
_cell_volume   67.47
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '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
  Ni  Ni0  1  0.0  0.0  0.79  1.0
  As  As1  1  0.0  0.0  0.46  1.0
  As  As2  1  0.08  0.0  0.96  1.0
  Pt  Pt3  1  0.08  0.0  0.95  1.0

Ni As As Pt
PtNiAs2 crystallizes in the monoclinic Pm space group. The structure is zero-dimensional and consists of one PtNiAs2 cluster. Pt(1) is bonded in a distorted linear geometry to one Ni(1) and one As(2) atom. The Pt(1)-Ni(1) bond length is 1.20 Å. The Pt(1)-As(2) bond length is 0.08 Å. Ni(1) is bonded in a distorted single-bond geometry to one Pt(1) and one As(1) atom. The Ni(1)-As(1) bond length is 2.46 Å. There are two inequivalent As sites. In the first As site, As(1) is bonded in a single-bond geometry to one Ni(1) atom. In the second As site, As(2) is bonded in a single-bond geometry to one Pt(1) atom.