The compound described by Be12Pt crystallizes in the tetragonal I4/mmm space group. There are three inequivalent Be sites. In the first Be site, Be(1) is bonded in a 10-coordinate geometry to one Be(1), four equivalent Be(2), four equivalent Be(3), and one Pt(1) atom. In the second Be site, Be(2) is bonded to two equivalent Be(2), four equivalent Be(1), four equivalent Be(3), and two equivalent Pt(1) atoms to form a mixture of corner, edge, and face-sharing BeBe10Pt2 cuboctahedra. In the third Be site, Be(3) is bonded to two equivalent Be(3), four equivalent Be(1), four equivalent Be(2), and two equivalent Pt(1) atoms to form a mixture of distorted corner, edge, and face-sharing BeBe10Pt2 cuboctahedra. Pt(1) is bonded in a 20-coordinate geometry to four equivalent Be(1), eight equivalent Be(2), and eight equivalent Be(3) atoms. is represented by the CIF file [CIF]
data_Be12Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.537
_cell_length_b   5.537
_cell_length_c   5.537
_cell_angle_alpha   98.154
_cell_angle_beta   98.154
_cell_angle_gamma   135.751
_symmetry_Int_Tables_number   1
_cell_volume   109.752
_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
  Be  Be0  1  0.348  0.000  0.348  1.0
  Be  Be1  1  0.500  0.000  0.000  1.0
  Be  Be2  1  0.000  0.348  0.348  1.0
  Be  Be3  1  0.275  0.500  0.775  1.0
  Be  Be4  1  0.652  0.000  0.652  1.0
  Be  Be5  1  0.500  0.500  0.500  1.0
  Be  Be6  1  0.000  0.652  0.652  1.0
  Be  Be7  1  0.500  0.725  0.225  1.0
  Be  Be8  1  0.725  0.500  0.225  1.0
  Be  Be9  1  0.000  0.000  0.500  1.0
  Be  Be10  1  0.500  0.275  0.775  1.0
  Be  Be11  1  0.000  0.500  0.000  1.0
  Pt  Pt12  1  0.000  0.000  0.000  1.0
[/CIF]
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The compound described by Be12Pt crystallizes in the tetragonal I4/mmm space group. There are three inequivalent Be sites. In the first Be site, Be(1) is bonded in a 10-coordinate geometry to one Be(1), four equivalent Be(2), four equivalent Be(3), and one Pt(1) atom. In the second Be site, Be(2) is bonded to two equivalent Be(2), four equivalent Be(1), four equivalent Be(3), and two equivalent Pt(1) atoms to form a mixture of corner, edge, and face-sharing BeBe10Pt2 cuboctahedra. In the third Be site, Be(3) is bonded to two equivalent Be(3), four equivalent Be(1), four equivalent Be(2), and two equivalent Pt(1) atoms to form a mixture of distorted corner, edge, and face-sharing BeBe10Pt2 cuboctahedra. Pt(1) is bonded in a 20-coordinate geometry to four equivalent Be(1), eight equivalent Be(2), and eight equivalent Be(3) atoms. is represented by the CIF file [CIF]
data_Be12Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.537
_cell_length_b   5.537
_cell_length_c   5.537
_cell_angle_alpha   98.154
_cell_angle_beta   98.154
_cell_angle_gamma   135.751
_symmetry_Int_Tables_number   1
_cell_volume   109.752
_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
  Be  Be0  1  0.348  0.000  0.348  1.0
  Be  Be1  1  0.500  0.000  0.000  1.0
  Be  Be2  1  0.000  0.348  0.348  1.0
  Be  Be3  1  0.275  0.500  0.775  1.0
  Be  Be4  1  0.652  0.000  0.652  1.0
  Be  Be5  1  0.500  0.500  0.500  1.0
  Be  Be6  1  0.000  0.652  0.652  1.0
  Be  Be7  1  0.500  0.725  0.225  1.0
  Be  Be8  1  0.725  0.500  0.225  1.0
  Be  Be9  1  0.000  0.000  0.500  1.0
  Be  Be10  1  0.500  0.275  0.775  1.0
  Be  Be11  1  0.000  0.500  0.000  1.0
  Pt  Pt12  1  0.000  0.000  0.000  1.0
[/CIF]
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