The structure described by Ho4Ge3Si crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 7-coordinate geometry to two equivalent Ge(1), four equivalent Ge(2), and one Si(1) atom. In the second Ho site, Ho(2) is bonded in a 7-coordinate geometry to one Ge(1), four equivalent Ge(3), and two equivalent Si(1) atoms. In the third Ho site, Ho(3) is bonded in a 7-coordinate geometry to one Ge(2), two equivalent Ge(3), and four equivalent Si(1) atoms. In the fourth Ho site, Ho(4) is bonded in a 7-coordinate geometry to one Ge(3), two equivalent Ge(2), and four equivalent Ge(1) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Ho(2), two equivalent Ho(1), four equivalent Ho(4), and two equivalent Ge(2) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to one Ho(3), two equivalent Ho(4), four equivalent Ho(1), and two equivalent Ge(1) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to one Ho(4), two equivalent Ho(3), four equivalent Ho(2), and two equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to one Ho(1), two equivalent Ho(2), four equivalent Ho(3), and two equivalent Ge(3) atoms. is represented by the CIF card [CIF]
data_Ho4SiGe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.898
_cell_length_b   4.238
_cell_length_c   10.590
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   174.913
_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
  Ho  Ho0  1  0.000  0.000  0.141  1.0
  Ho  Ho1  1  0.000  0.500  0.638  1.0
  Ho  Ho2  1  0.500  0.500  0.361  1.0
  Ho  Ho3  1  0.500  0.000  0.861  1.0
  Si  Si4  1  0.000  0.000  0.419  1.0
  Ge  Ge5  1  0.000  0.500  0.914  1.0
  Ge  Ge6  1  0.500  0.500  0.085  1.0
  Ge  Ge7  1  0.500  0.000  0.581  1.0
[/CIF]
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The structure described by Ho4Ge3Si crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 7-coordinate geometry to two equivalent Ge(1), four equivalent Ge(2), and one Si(1) atom. In the second Ho site, Ho(2) is bonded in a 7-coordinate geometry to one Ge(1), four equivalent Ge(3), and two equivalent Si(1) atoms. In the third Ho site, Ho(3) is bonded in a 7-coordinate geometry to one Ge(2), two equivalent Ge(3), and four equivalent Si(1) atoms. In the fourth Ho site, Ho(4) is bonded in a 7-coordinate geometry to one Ge(3), two equivalent Ge(2), and four equivalent Ge(1) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Ho(2), two equivalent Ho(1), four equivalent Ho(4), and two equivalent Ge(2) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to one Ho(3), two equivalent Ho(4), four equivalent Ho(1), and two equivalent Ge(1) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to one Ho(4), two equivalent Ho(3), four equivalent Ho(2), and two equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to one Ho(1), two equivalent Ho(2), four equivalent Ho(3), and two equivalent Ge(3) atoms. is represented by the CIF card [CIF]
data_Ho4SiGe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.898
_cell_length_b   4.238
_cell_length_c   10.590
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   174.913
_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
  Ho  Ho0  1  0.000  0.000  0.141  1.0
  Ho  Ho1  1  0.000  0.500  0.638  1.0
  Ho  Ho2  1  0.500  0.500  0.361  1.0
  Ho  Ho3  1  0.500  0.000  0.861  1.0
  Si  Si4  1  0.000  0.000  0.419  1.0
  Ge  Ge5  1  0.000  0.500  0.914  1.0
  Ge  Ge6  1  0.500  0.500  0.085  1.0
  Ge  Ge7  1  0.500  0.000  0.581  1.0
[/CIF]
.