data_Hf2BePt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.3
_cell_length_b   3.3
_cell_length_c   6.23
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Hf2BePt
_chemical_formula_sum   'Hf2 Be1 Pt1'
_cell_volume   67.92
_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
  Hf  Hf1  1  0.65  0.65  0.49  1.0
  Hf  Hf2  1  0.65  0.65  0.74  1.0
  Be  Be0  1  0.0  0.0  0.0  1.0
  Pt  Pt3  1  0.0  0.0  0.11  1.0

data_Hf2BePt
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.67
_cell_length_b   4.67
_cell_length_c   6.23
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Hf2BePt
_chemical_formula_sum   'Hf4 Be2 Pt2'
_cell_volume   135.84
_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
  Hf  Hf0  2  0.15  0.5  0.49  1.0
  Hf  Hf1  2  0.15  0.5  0.74  1.0
  Be  Be2  2  0.0  0.0  0.0  1.0
  Pt  Pt3  2  0.0  0.0  0.11  1.0

Hf Hf Be Pt
Hf Hf Be Pt 0 1 o o o 2 3 o o o 
BeHf2Pt crystallizes in the monoclinic Cm space group. Be(1) is bonded in a single-bond geometry to three equivalent Hf(2) and one Pt(1) atom. There is one shorter (2.32 Å) and two longer (2.94 Å) Be(1)-Hf(2) bond lengths. The Be(1)-Pt(1) bond length is 0.72 Å. There are two inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a 2-coordinate geometry to one Hf(2) and one Pt(1) atom. The Hf(1)-Hf(2) bond length is 1.50 Å. The Hf(1)-Pt(1) bond length is 2.87 Å. In the second Hf site, Hf(2) is bonded in a 4-coordinate geometry to three equivalent Be(1) and one Hf(1) atom. Pt(1) is bonded in a single-bond geometry to one Be(1) and one Hf(1) atom.