The crystal structure described by CoGe2 crystallizes in the orthorhombic Cmce space group. Co(1) is bonded in a 9-coordinate geometry to one Co(1), four 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 5-coordinate geometry to four equivalent Co(1) and one Ge(1) atom. In the second Ge site, Ge(2) is bonded to four equivalent Co(1) atoms to form a mixture of distorted corner and edge-sharing GeCo4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_CoGe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.598
_cell_length_b   5.600
_cell_length_c   6.083
_cell_angle_alpha   90.000
_cell_angle_beta   117.392
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   169.304
_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  0.992  0.000  0.984  1.0
  Co  Co1  1  0.492  0.500  0.984  1.0
  Co  Co2  1  0.758  0.000  0.516  1.0
  Co  Co3  1  0.258  0.500  0.516  1.0
  Ge  Ge4  1  0.716  0.659  0.750  1.0
  Ge  Ge5  1  0.034  0.341  0.750  1.0
  Ge  Ge6  1  0.534  0.159  0.750  1.0
  Ge  Ge7  1  0.216  0.841  0.750  1.0
  Ge  Ge8  1  0.877  0.750  0.250  1.0
  Ge  Ge9  1  0.373  0.250  0.250  1.0
  Ge  Ge10  1  0.873  0.250  0.250  1.0
  Ge  Ge11  1  0.377  0.750  0.250  1.0
[/CIF]
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The crystal structure described by CoGe2 crystallizes in the orthorhombic Cmce space group. Co(1) is bonded in a 9-coordinate geometry to one Co(1), four 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 5-coordinate geometry to four equivalent Co(1) and one Ge(1) atom. In the second Ge site, Ge(2) is bonded to four equivalent Co(1) atoms to form a mixture of distorted corner and edge-sharing GeCo4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_CoGe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.598
_cell_length_b   5.600
_cell_length_c   6.083
_cell_angle_alpha   90.000
_cell_angle_beta   117.392
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   169.304
_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  0.992  0.000  0.984  1.0
  Co  Co1  1  0.492  0.500  0.984  1.0
  Co  Co2  1  0.758  0.000  0.516  1.0
  Co  Co3  1  0.258  0.500  0.516  1.0
  Ge  Ge4  1  0.716  0.659  0.750  1.0
  Ge  Ge5  1  0.034  0.341  0.750  1.0
  Ge  Ge6  1  0.534  0.159  0.750  1.0
  Ge  Ge7  1  0.216  0.841  0.750  1.0
  Ge  Ge8  1  0.877  0.750  0.250  1.0
  Ge  Ge9  1  0.373  0.250  0.250  1.0
  Ge  Ge10  1  0.873  0.250  0.250  1.0
  Ge  Ge11  1  0.377  0.750  0.250  1.0
[/CIF]
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