data_TaBPt2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.8
_cell_length_b   2.8
_cell_length_c   7.01
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TaBPt2
_chemical_formula_sum   'Ta1 B1 Pt2'
_cell_volume   55.02
_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  0.0  0.0  0.5  1.0
  B  B0  1  0.0  0.0  0.0  1.0
  Pt  Pt1  1  0.4  0.4  0.36  1.0
  Pt  Pt2  1  0.4  0.4  0.65  1.0

data_TaBPt2
_symmetry_space_group_name_H-M   Amm2
_cell_length_a   7.01
_cell_length_b   3.96
_cell_length_c   3.96
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   38
_chemical_formula_structural   TaBPt2
_chemical_formula_sum   'Ta2 B2 Pt4'
_cell_volume   110.05
_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, y, z'
  4  'x, -y, z'
  5  'x, y+1/2, z+1/2'
  6  '-x, -y+1/2, z+1/2'
  7  '-x, y+1/2, z+1/2'
  8  'x, -y+1/2, z+1/2'
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  0.5  0.0  0.0  1.0
  B  B1  2  0.0  0.0  0.0  1.0
  Pt  Pt2  4  0.35  0.0  0.4  1.0

Ta B Pt Pt
TaPt2B crystallizes in the monoclinic Cm space group. Ta(1) is bonded in a 8-coordinate geometry to four equivalent Pt(1) and four equivalent Pt(2) atoms. There are a spread of Ta(1)-Pt(1) bond distances ranging from 1.89-2.58 Å. There are a spread of Ta(1)-Pt(2) bond distances ranging from 1.89-2.58 Å. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 1-coordinate geometry to four equivalent Ta(1) and one B(1) atom. The Pt(1)-B(1) bond length is 2.97 Å. In the second Pt site, Pt(2) is bonded in a 1-coordinate geometry to four equivalent Ta(1) and one B(1) atom. The Pt(2)-B(1) bond length is 2.93 Å. B(1) is bonded in a distorted bent 120 degrees geometry to one Pt(1) and one Pt(2) atom.