data_Ta2BePt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.95
_cell_length_b   3.95
_cell_length_c   3.95
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ta2BePt
_chemical_formula_sum   'Ta2 Be1 Pt1'
_cell_volume   61.79
_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  0.98  0.0  0.98  1.0
  Ta  Ta3  1  0.0  0.98  0.98  1.0
  Be  Be0  1  0.0  0.0  0.0  1.0
  Pt  Pt1  1  0.98  0.98  0.0  1.0

data_Ta2BePt
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.59
_cell_length_b   5.59
_cell_length_c   3.95
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Ta2BePt
_chemical_formula_sum   'Ta4 Be2 Pt2'
_cell_volume   123.58
_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  4  0.49  0.49  0.98  1.0
  Be  Be1  2  0.0  0.0  0.0  1.0
  Pt  Pt2  2  0.48  0.5  -0.0  1.0

Ta Ta Be Pt
Ta Ta Be Pt 0 1 + - o 0 3 o - + 0 2 + o + 1 3 - o + 1 2 o + + 2 3 - - o 
BeTa2Pt is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two BeTa2Pt clusters. Be(1) is bonded in a 3-coordinate geometry to two equivalent Ta(1) and one Pt(1) atom. Both Be(1)-Ta(1) bond lengths are 0.13 Å. The Be(1)-Pt(1) bond length is 0.13 Å. Ta(1) is bonded in a 3-coordinate geometry to one Be(1), one Ta(1), and one Pt(1) atom. The Ta(1)-Ta(1) bond length is 0.13 Å. The Ta(1)-Pt(1) bond length is 0.13 Å. Pt(1) is bonded in a 3-coordinate geometry to one Be(1) and two equivalent Ta(1) atoms.