The crystal structure described by Ho2MnGe4 crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 10-coordinate geometry to two equivalent Ge(1), two equivalent Ge(3), two equivalent Ge(4), and four equivalent Ge(2) atoms. In the second Ho site, Ho(2) is bonded in a 10-coordinate geometry to two equivalent Ge(2), two equivalent Ge(3), two equivalent Ge(4), and four equivalent Ge(1) atoms. Mn(1) is bonded in a 5-coordinate geometry to one Ge(1), two equivalent Ge(3), and two equivalent Ge(4) atoms. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a distorted single-bond geometry to two equivalent Ho(1), four equivalent Ho(2), one Mn(1), and two equivalent Ge(2) atoms. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to two equivalent Ho(2), four equivalent Ho(1), and two equivalent Ge(1) atoms. In the third Ge site, Ge(3) is bonded in a 2-coordinate geometry to two equivalent Ho(1), two equivalent Ho(2), and two equivalent Mn(1) atoms. In the fourth Ge site, Ge(4) is bonded in a 2-coordinate geometry to two equivalent Ho(1), two equivalent Ho(2), and two equivalent Mn(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ho2MnGe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.202
_cell_length_b   4.238
_cell_length_c   8.015
_cell_angle_alpha   74.671
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   137.640
_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  0.250  0.896  0.207  1.0
  Ho  Ho1  1  0.750  0.101  0.798  1.0
  Mn  Mn2  1  0.250  0.696  0.608  1.0
  Ge  Ge3  1  0.250  0.545  0.909  1.0
  Ge  Ge4  1  0.750  0.436  0.128  1.0
  Ge  Ge5  1  0.250  0.257  0.486  1.0
  Ge  Ge6  1  0.750  0.754  0.491  1.0
[/CIF]
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The crystal structure described by Ho2MnGe4 crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 10-coordinate geometry to two equivalent Ge(1), two equivalent Ge(3), two equivalent Ge(4), and four equivalent Ge(2) atoms. In the second Ho site, Ho(2) is bonded in a 10-coordinate geometry to two equivalent Ge(2), two equivalent Ge(3), two equivalent Ge(4), and four equivalent Ge(1) atoms. Mn(1) is bonded in a 5-coordinate geometry to one Ge(1), two equivalent Ge(3), and two equivalent Ge(4) atoms. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a distorted single-bond geometry to two equivalent Ho(1), four equivalent Ho(2), one Mn(1), and two equivalent Ge(2) atoms. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to two equivalent Ho(2), four equivalent Ho(1), and two equivalent Ge(1) atoms. In the third Ge site, Ge(3) is bonded in a 2-coordinate geometry to two equivalent Ho(1), two equivalent Ho(2), and two equivalent Mn(1) atoms. In the fourth Ge site, Ge(4) is bonded in a 2-coordinate geometry to two equivalent Ho(1), two equivalent Ho(2), and two equivalent Mn(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ho2MnGe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.202
_cell_length_b   4.238
_cell_length_c   8.015
_cell_angle_alpha   74.671
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   137.640
_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  0.250  0.896  0.207  1.0
  Ho  Ho1  1  0.750  0.101  0.798  1.0
  Mn  Mn2  1  0.250  0.696  0.608  1.0
  Ge  Ge3  1  0.250  0.545  0.909  1.0
  Ge  Ge4  1  0.750  0.436  0.128  1.0
  Ge  Ge5  1  0.250  0.257  0.486  1.0
  Ge  Ge6  1  0.750  0.754  0.491  1.0
[/CIF]
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