data_Ta2BPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.18
_cell_length_b   3.18
_cell_length_c   6.29
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ta2BPt
_chemical_formula_sum   'Ta2 B1 Pt1'
_cell_volume   63.38
_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  Ta2  1  0.0  0.0  0.02  1.0
  Ta  Ta3  1  0.59  0.59  0.1  1.0
  B  B0  1  0.0  0.0  0.49  1.0
  Pt  Pt1  1  0.59  0.59  0.82  1.0

data_Ta2BPt
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.49
_cell_length_b   4.49
_cell_length_c   6.29
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Ta2BPt
_chemical_formula_sum   'Ta4 B2 Pt2'
_cell_volume   126.76
_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  0.0  0.0  0.02  1.0
  Ta  Ta1  2  0.09  0.5  0.1  1.0
  B  B2  2  0.0  0.0  0.49  1.0
  Pt  Pt3  2  0.09  0.5  0.82  1.0

Ta Ta B Pt
Ta2PtB crystallizes in the monoclinic Cm space group. There are two inequivalent Ta sites. In the first Ta site, Ta(1) is bonded in a 9-coordinate geometry to four equivalent Ta(2), four equivalent Pt(1), and one B(1) atom. There are a spread of Ta(1)-Ta(2) bond distances ranging from 1.92-2.68 Å. There are a spread of Ta(1)-Pt(1) bond distances ranging from 2.26-2.94 Å. The Ta(1)-B(1) bond length is 2.97 Å. In the second Ta site, Ta(2) is bonded in a distorted single-bond geometry to four equivalent Ta(1), one Pt(1), and one B(1) atom. The Ta(2)-Pt(1) bond length is 1.79 Å. The Ta(2)-B(1) bond length is 3.10 Å. Pt(1) is bonded in a distorted single-bond geometry to one Ta(2), four equivalent Ta(1), and one B(1) atom. The Pt(1)-B(1) bond length is 2.74 Å. B(1) is bonded in a 3-coordinate geometry to one Ta(1), one Ta(2), and one Pt(1) atom.