The structure described by BaCu9Ge4 crystallizes in the tetragonal I4/mcm space group. Ba(1) is bonded in a 24-coordinate geometry to eight equivalent Cu(1), eight equivalent Cu(2), and eight equivalent Ge(1) atoms. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 12-coordinate geometry to two equivalent Ba(1), one Cu(3), two equivalent Cu(2), three equivalent Cu(1), and four equivalent Ge(1) atoms. In the second Cu site, Cu(2) is bonded in a 12-coordinate geometry to two equivalent Ba(1), one Cu(3), two equivalent Cu(1), three equivalent Cu(2), and four equivalent Ge(1) atoms. In the third Cu site, Cu(3) is bonded in a cuboctahedral geometry to four equivalent Cu(1), four equivalent Cu(2), and four equivalent Ge(1) atoms. Ge(1) is bonded in a 12-coordinate geometry to two equivalent Ba(1), one Cu(3), four equivalent Cu(1), four equivalent Cu(2), and one Ge(1) atom. is represented by the CIF file [CIF]
data_BaCu9Ge4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.452
_cell_length_b   8.452
_cell_length_c   8.452
_cell_angle_alpha   120.612
_cell_angle_beta   120.612
_cell_angle_gamma   88.944
_symmetry_Int_Tables_number   1
_cell_volume   422.886
_cell_formula_units_Z   2
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
  Ba  Ba0  1  0.250  0.250  0.000  1.0
  Ba  Ba1  1  0.750  0.750  0.000  1.0
  Cu  Cu2  1  0.061  0.561  0.266  1.0
  Cu  Cu3  1  0.706  0.206  0.266  1.0
  Cu  Cu4  1  0.939  0.439  0.734  1.0
  Cu  Cu5  1  0.439  0.706  0.500  1.0
  Cu  Cu6  1  0.206  0.939  0.500  1.0
  Cu  Cu7  1  0.561  0.294  0.500  1.0
  Cu  Cu8  1  0.794  0.061  0.500  1.0
  Cu  Cu9  1  0.294  0.794  0.734  1.0
  Cu  Cu10  1  0.438  0.296  0.734  1.0
  Cu  Cu11  1  0.796  0.938  0.734  1.0
  Cu  Cu12  1  0.000  0.500  0.500  1.0
  Cu  Cu13  1  0.500  0.000  0.500  1.0
  Cu  Cu14  1  0.562  0.704  0.266  1.0
  Cu  Cu15  1  0.704  0.438  0.143  1.0
  Cu  Cu16  1  0.296  0.562  0.857  1.0
  Cu  Cu17  1  0.938  0.204  0.143  1.0
  Cu  Cu18  1  0.062  0.796  0.857  1.0
  Cu  Cu19  1  0.204  0.062  0.266  1.0
  Ge  Ge20  1  0.799  0.299  0.857  1.0
  Ge  Ge21  1  0.558  0.058  0.857  1.0
  Ge  Ge22  1  0.201  0.701  0.143  1.0
  Ge  Ge23  1  0.701  0.558  0.500  1.0
  Ge  Ge24  1  0.058  0.201  0.500  1.0
  Ge  Ge25  1  0.299  0.442  0.500  1.0
  Ge  Ge26  1  0.942  0.799  0.500  1.0
  Ge  Ge27  1  0.442  0.942  0.143  1.0
[/CIF]
.
The structure described by BaCu9Ge4 crystallizes in the tetragonal I4/mcm space group. Ba(1) is bonded in a 24-coordinate geometry to eight equivalent Cu(1), eight equivalent Cu(2), and eight equivalent Ge(1) atoms. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 12-coordinate geometry to two equivalent Ba(1), one Cu(3), two equivalent Cu(2), three equivalent Cu(1), and four equivalent Ge(1) atoms. In the second Cu site, Cu(2) is bonded in a 12-coordinate geometry to two equivalent Ba(1), one Cu(3), two equivalent Cu(1), three equivalent Cu(2), and four equivalent Ge(1) atoms. In the third Cu site, Cu(3) is bonded in a cuboctahedral geometry to four equivalent Cu(1), four equivalent Cu(2), and four equivalent Ge(1) atoms. Ge(1) is bonded in a 12-coordinate geometry to two equivalent Ba(1), one Cu(3), four equivalent Cu(1), four equivalent Cu(2), and one Ge(1) atom. is represented by the CIF file [CIF]
data_BaCu9Ge4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.452
_cell_length_b   8.452
_cell_length_c   8.452
_cell_angle_alpha   120.612
_cell_angle_beta   120.612
_cell_angle_gamma   88.944
_symmetry_Int_Tables_number   1
_cell_volume   422.886
_cell_formula_units_Z   2
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
  Ba  Ba0  1  0.250  0.250  0.000  1.0
  Ba  Ba1  1  0.750  0.750  0.000  1.0
  Cu  Cu2  1  0.061  0.561  0.266  1.0
  Cu  Cu3  1  0.706  0.206  0.266  1.0
  Cu  Cu4  1  0.939  0.439  0.734  1.0
  Cu  Cu5  1  0.439  0.706  0.500  1.0
  Cu  Cu6  1  0.206  0.939  0.500  1.0
  Cu  Cu7  1  0.561  0.294  0.500  1.0
  Cu  Cu8  1  0.794  0.061  0.500  1.0
  Cu  Cu9  1  0.294  0.794  0.734  1.0
  Cu  Cu10  1  0.438  0.296  0.734  1.0
  Cu  Cu11  1  0.796  0.938  0.734  1.0
  Cu  Cu12  1  0.000  0.500  0.500  1.0
  Cu  Cu13  1  0.500  0.000  0.500  1.0
  Cu  Cu14  1  0.562  0.704  0.266  1.0
  Cu  Cu15  1  0.704  0.438  0.143  1.0
  Cu  Cu16  1  0.296  0.562  0.857  1.0
  Cu  Cu17  1  0.938  0.204  0.143  1.0
  Cu  Cu18  1  0.062  0.796  0.857  1.0
  Cu  Cu19  1  0.204  0.062  0.266  1.0
  Ge  Ge20  1  0.799  0.299  0.857  1.0
  Ge  Ge21  1  0.558  0.058  0.857  1.0
  Ge  Ge22  1  0.201  0.701  0.143  1.0
  Ge  Ge23  1  0.701  0.558  0.500  1.0
  Ge  Ge24  1  0.058  0.201  0.500  1.0
  Ge  Ge25  1  0.299  0.442  0.500  1.0
  Ge  Ge26  1  0.942  0.799  0.500  1.0
  Ge  Ge27  1  0.442  0.942  0.143  1.0
[/CIF]
.