data_B3Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.32
_cell_length_b   4.32
_cell_length_c   4.32
_cell_angle_alpha   137.76
_cell_angle_beta   66.61
_cell_angle_gamma   131.04
_symmetry_Int_Tables_number   1
_chemical_formula_structural   B3Pt
_chemical_formula_sum   'B3 Pt1'
_cell_volume   40.36
_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
  B  B0  1  0.0  0.51  0.15  1.0
  B  B1  1  0.56  0.11  0.35  1.0
  B  B2  1  0.0  0.0  0.74  1.0
  Pt  Pt3  1  0.56  0.0  0.73  1.0

data_B3Pt
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.12
_cell_length_b   3.58
_cell_length_c   4.32
_cell_angle_alpha   114.48
_cell_angle_beta   111.12
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   B3Pt
_chemical_formula_sum   'B3 Pt1'
_cell_volume   40.36
_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
  B  B0  1  0.0  0.26  0.26  1.0
  B  B1  1  0.51  0.36  0.36  1.0
  B  B2  1  0.55  0.75  0.19  1.0
  Pt  Pt3  1  0.44  0.27  0.71  1.0

B B B Pt
B B B Pt 0 3 - o - 0 2 o + o 0 2 o o - 0 1 o + o 0 1 - o o 1 2 o o o 1 2 + + o 1 3 o o o 2 3 - o o 
PtB3 crystallizes in the triclinic P1 space group. Pt(1) is bonded in a 5-coordinate geometry to one B(1), two equivalent B(2), and two equivalent B(3) atoms. The Pt(1)-B(1) bond length is 1.75 Å. There is one shorter (2.00 Å) and one longer (2.37 Å) Pt(1)-B(2) bond length. There is one shorter (1.93 Å) and one longer (2.39 Å) Pt(1)-B(3) bond length. There are three inequivalent B sites. In the first B site, B(1) is bonded in a 5-coordinate geometry to one Pt(1), two equivalent B(2), and two equivalent B(3) atoms. There is one shorter (1.84 Å) and one longer (2.02 Å) B(1)-B(2) bond length. There is one shorter (1.48 Å) and one longer (1.75 Å) B(1)-B(3) bond length. In the second B site, B(2) is bonded in a 1-coordinate geometry to two equivalent Pt(1), one B(3), and two equivalent B(1) atoms. The B(2)-B(3) bond length is 2.16 Å. In the third B site, B(3) is bonded in a 5-coordinate geometry to two equivalent Pt(1), one B(2), and two equivalent B(1) atoms.