The crystal structure described by CoGe crystallizes in the monoclinic C2/m space group. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a 4-coordinate geometry to two equivalent Co(2) and two equivalent Ge(2) atoms. In the second Co site, Co(2) is bonded to two equivalent Co(1), two equivalent Ge(1), and two equivalent Ge(2) atoms to form distorted corner-sharing CoCo2Ge4 octahedra. The corner-sharing octahedra are not tilted. In the third Co site, Co(3) is bonded in a 2-coordinate geometry to two equivalent Ge(1) and four equivalent Ge(2) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 3-coordinate geometry to one Co(2), two equivalent Co(3), and two equivalent Ge(2) atoms. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to one Co(1), one Co(2), four equivalent Co(3), and two equivalent Ge(1) atoms. is represented by the CIF file [CIF]
data_CoGe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.412
_cell_length_b   5.892
_cell_length_c   5.892
_cell_angle_alpha   77.413
_cell_angle_beta   113.185
_cell_angle_gamma   113.185
_symmetry_Int_Tables_number   1
_cell_volume   129.051
_cell_formula_units_Z   4
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
  Co  Co0  1  0.000  0.000  0.000  1.0
  Co  Co1  1  0.500  0.000  0.000  1.0
  Co  Co2  1  0.500  0.500  0.000  1.0
  Co  Co3  1  0.500  0.000  0.500  1.0
  Ge  Ge4  1  0.500  0.309  0.691  1.0
  Ge  Ge5  1  0.500  0.691  0.309  1.0
  Ge  Ge6  1  0.013  0.267  0.267  1.0
  Ge  Ge7  1  0.987  0.733  0.733  1.0
[/CIF]
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The crystal structure described by CoGe crystallizes in the monoclinic C2/m space group. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a 4-coordinate geometry to two equivalent Co(2) and two equivalent Ge(2) atoms. In the second Co site, Co(2) is bonded to two equivalent Co(1), two equivalent Ge(1), and two equivalent Ge(2) atoms to form distorted corner-sharing CoCo2Ge4 octahedra. The corner-sharing octahedra are not tilted. In the third Co site, Co(3) is bonded in a 2-coordinate geometry to two equivalent Ge(1) and four equivalent Ge(2) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 3-coordinate geometry to one Co(2), two equivalent Co(3), and two equivalent Ge(2) atoms. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to one Co(1), one Co(2), four equivalent Co(3), and two equivalent Ge(1) atoms. is represented by the CIF file [CIF]
data_CoGe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.412
_cell_length_b   5.892
_cell_length_c   5.892
_cell_angle_alpha   77.413
_cell_angle_beta   113.185
_cell_angle_gamma   113.185
_symmetry_Int_Tables_number   1
_cell_volume   129.051
_cell_formula_units_Z   4
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
  Co  Co0  1  0.000  0.000  0.000  1.0
  Co  Co1  1  0.500  0.000  0.000  1.0
  Co  Co2  1  0.500  0.500  0.000  1.0
  Co  Co3  1  0.500  0.000  0.500  1.0
  Ge  Ge4  1  0.500  0.309  0.691  1.0
  Ge  Ge5  1  0.500  0.691  0.309  1.0
  Ge  Ge6  1  0.013  0.267  0.267  1.0
  Ge  Ge7  1  0.987  0.733  0.733  1.0
[/CIF]
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