The material structure described by Be15Zr6Cu8 crystallizes in the cubic Fm-3m space group. There are three inequivalent Be sites. In the first Be site, Be(2) is bonded to four equivalent Be(1), four equivalent Zr(1), and four equivalent Cu(1) atoms to form a mixture of distorted face and corner-sharing BeZr4Be4Cu4 cuboctahedra. In the second Be site, Be(3) is bonded in a body-centered cubic geometry to eight equivalent Cu(1) atoms. In the third Be site, Be(1) is bonded in a distorted q6 geometry to three equivalent Be(1), three equivalent Be(2), three equivalent Zr(1), and three equivalent Cu(1) atoms. Zr(1) is bonded in a 12-coordinate geometry to four equivalent Be(1), four equivalent Be(2), and four equivalent Cu(1) atoms. Cu(1) is bonded in a 10-coordinate geometry to one Be(3), three equivalent Be(1), three equivalent Be(2), and three equivalent Zr(1) atoms. is represented by the CIF file [CIF]
data_Zr6Be15Cu8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.867
_cell_length_b   7.867
_cell_length_c   7.867
_cell_angle_alpha   60.004
_cell_angle_beta   60.004
_cell_angle_gamma   60.004
_symmetry_Int_Tables_number   1
_cell_volume   344.347
_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
  Zr  Zr0  1  0.705  0.295  0.295  1.0
  Zr  Zr1  1  0.295  0.705  0.705  1.0
  Zr  Zr2  1  0.295  0.705  0.295  1.0
  Zr  Zr3  1  0.705  0.295  0.705  1.0
  Zr  Zr4  1  0.295  0.295  0.705  1.0
  Zr  Zr5  1  0.705  0.705  0.295  1.0
  Be  Be6  1  0.323  0.323  0.323  1.0
  Be  Be7  1  0.677  0.677  0.677  1.0
  Be  Be8  1  0.323  0.323  0.030  1.0
  Be  Be9  1  0.323  0.030  0.323  1.0
  Be  Be10  1  0.677  0.677  0.970  1.0
  Be  Be11  1  0.677  0.970  0.677  1.0
  Be  Be12  1  0.030  0.323  0.323  1.0
  Be  Be13  1  0.970  0.677  0.677  1.0
  Be  Be14  1  0.500  0.000  0.000  1.0
  Be  Be15  1  0.000  0.500  0.500  1.0
  Be  Be16  1  0.000  0.500  0.000  1.0
  Be  Be17  1  0.500  0.000  0.500  1.0
  Be  Be18  1  0.000  0.000  0.500  1.0
  Be  Be19  1  0.500  0.500  0.000  1.0
  Be  Be20  1  1.000  0.000  1.000  1.0
  Cu  Cu21  1  0.123  0.123  0.123  1.0
  Cu  Cu22  1  0.877  0.877  0.877  1.0
  Cu  Cu23  1  0.123  0.123  0.630  1.0
  Cu  Cu24  1  0.123  0.630  0.123  1.0
  Cu  Cu25  1  0.877  0.877  0.370  1.0
  Cu  Cu26  1  0.877  0.370  0.877  1.0
  Cu  Cu27  1  0.630  0.123  0.123  1.0
  Cu  Cu28  1  0.370  0.877  0.877  1.0
[/CIF]
.
The material structure described by Be15Zr6Cu8 crystallizes in the cubic Fm-3m space group. There are three inequivalent Be sites. In the first Be site, Be(2) is bonded to four equivalent Be(1), four equivalent Zr(1), and four equivalent Cu(1) atoms to form a mixture of distorted face and corner-sharing BeZr4Be4Cu4 cuboctahedra. In the second Be site, Be(3) is bonded in a body-centered cubic geometry to eight equivalent Cu(1) atoms. In the third Be site, Be(1) is bonded in a distorted q6 geometry to three equivalent Be(1), three equivalent Be(2), three equivalent Zr(1), and three equivalent Cu(1) atoms. Zr(1) is bonded in a 12-coordinate geometry to four equivalent Be(1), four equivalent Be(2), and four equivalent Cu(1) atoms. Cu(1) is bonded in a 10-coordinate geometry to one Be(3), three equivalent Be(1), three equivalent Be(2), and three equivalent Zr(1) atoms. is represented by the CIF file [CIF]
data_Zr6Be15Cu8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.867
_cell_length_b   7.867
_cell_length_c   7.867
_cell_angle_alpha   60.004
_cell_angle_beta   60.004
_cell_angle_gamma   60.004
_symmetry_Int_Tables_number   1
_cell_volume   344.347
_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
  Zr  Zr0  1  0.705  0.295  0.295  1.0
  Zr  Zr1  1  0.295  0.705  0.705  1.0
  Zr  Zr2  1  0.295  0.705  0.295  1.0
  Zr  Zr3  1  0.705  0.295  0.705  1.0
  Zr  Zr4  1  0.295  0.295  0.705  1.0
  Zr  Zr5  1  0.705  0.705  0.295  1.0
  Be  Be6  1  0.323  0.323  0.323  1.0
  Be  Be7  1  0.677  0.677  0.677  1.0
  Be  Be8  1  0.323  0.323  0.030  1.0
  Be  Be9  1  0.323  0.030  0.323  1.0
  Be  Be10  1  0.677  0.677  0.970  1.0
  Be  Be11  1  0.677  0.970  0.677  1.0
  Be  Be12  1  0.030  0.323  0.323  1.0
  Be  Be13  1  0.970  0.677  0.677  1.0
  Be  Be14  1  0.500  0.000  0.000  1.0
  Be  Be15  1  0.000  0.500  0.500  1.0
  Be  Be16  1  0.000  0.500  0.000  1.0
  Be  Be17  1  0.500  0.000  0.500  1.0
  Be  Be18  1  0.000  0.000  0.500  1.0
  Be  Be19  1  0.500  0.500  0.000  1.0
  Be  Be20  1  1.000  0.000  1.000  1.0
  Cu  Cu21  1  0.123  0.123  0.123  1.0
  Cu  Cu22  1  0.877  0.877  0.877  1.0
  Cu  Cu23  1  0.123  0.123  0.630  1.0
  Cu  Cu24  1  0.123  0.630  0.123  1.0
  Cu  Cu25  1  0.877  0.877  0.370  1.0
  Cu  Cu26  1  0.877  0.370  0.877  1.0
  Cu  Cu27  1  0.630  0.123  0.123  1.0
  Cu  Cu28  1  0.370  0.877  0.877  1.0
[/CIF]
.