The compound described by Co21(B3Ge)2 crystallizes in the cubic Fm-3m space group. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a cuboctahedral geometry to twelve equivalent Co(3) atoms. In the second Co site, Co(2) is bonded to three equivalent B(1) and one Ge(1) atom to form a mixture of distorted edge and corner-sharing CoGeB3 tetrahedra. In the third Co site, Co(3) is bonded in a distorted bent 150 degrees geometry to one Co(1) and two equivalent B(1) atoms. B(1) is bonded in a 8-coordinate geometry to four equivalent Co(2) and four equivalent Co(3) atoms. Ge(1) is bonded in a distorted tetrahedral geometry to four equivalent Co(2) atoms. is represented by the CIF file [CIF]
data_Co21(GeB3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.340
_cell_length_b   7.340
_cell_length_c   7.340
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   59.999
_symmetry_Int_Tables_number   1
_cell_volume   279.675
_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
  Co  Co0  1  1.000  0.000  1.000  1.0
  Co  Co1  1  0.620  0.620  0.141  1.0
  Co  Co2  1  0.620  0.141  0.620  1.0
  Co  Co3  1  0.141  0.620  0.620  1.0
  Co  Co4  1  0.620  0.620  0.620  1.0
  Co  Co5  1  0.380  0.380  0.859  1.0
  Co  Co6  1  0.380  0.859  0.380  1.0
  Co  Co7  1  0.859  0.380  0.380  1.0
  Co  Co8  1  0.380  0.380  0.380  1.0
  Co  Co9  1  1.000  0.000  0.339  1.0
  Co  Co10  1  0.661  0.000  0.339  1.0
  Co  Co11  1  0.000  0.661  0.339  1.0
  Co  Co12  1  0.661  0.339  0.000  1.0
  Co  Co13  1  1.000  0.339  0.000  1.0
  Co  Co14  1  0.000  0.339  0.661  1.0
  Co  Co15  1  0.339  0.661  0.000  1.0
  Co  Co16  1  0.339  0.000  0.661  1.0
  Co  Co17  1  0.339  0.000  1.000  1.0
  Co  Co18  1  1.000  1.000  0.661  1.0
  Co  Co19  1  1.000  0.661  1.000  1.0
  Co  Co20  1  0.661  1.000  1.000  1.0
  Ge  Ge21  1  0.750  0.750  0.750  1.0
  Ge  Ge22  1  0.250  0.250  0.250  1.0
  B  B23  1  0.721  0.721  0.279  1.0
  B  B24  1  0.279  0.721  0.279  1.0
  B  B25  1  0.721  0.279  0.279  1.0
  B  B26  1  0.279  0.279  0.721  1.0
  B  B27  1  0.721  0.279  0.721  1.0
  B  B28  1  0.279  0.721  0.721  1.0
[/CIF]
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The compound described by Co21(B3Ge)2 crystallizes in the cubic Fm-3m space group. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a cuboctahedral geometry to twelve equivalent Co(3) atoms. In the second Co site, Co(2) is bonded to three equivalent B(1) and one Ge(1) atom to form a mixture of distorted edge and corner-sharing CoGeB3 tetrahedra. In the third Co site, Co(3) is bonded in a distorted bent 150 degrees geometry to one Co(1) and two equivalent B(1) atoms. B(1) is bonded in a 8-coordinate geometry to four equivalent Co(2) and four equivalent Co(3) atoms. Ge(1) is bonded in a distorted tetrahedral geometry to four equivalent Co(2) atoms. is represented by the CIF file [CIF]
data_Co21(GeB3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.340
_cell_length_b   7.340
_cell_length_c   7.340
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   59.999
_symmetry_Int_Tables_number   1
_cell_volume   279.675
_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
  Co  Co0  1  1.000  0.000  1.000  1.0
  Co  Co1  1  0.620  0.620  0.141  1.0
  Co  Co2  1  0.620  0.141  0.620  1.0
  Co  Co3  1  0.141  0.620  0.620  1.0
  Co  Co4  1  0.620  0.620  0.620  1.0
  Co  Co5  1  0.380  0.380  0.859  1.0
  Co  Co6  1  0.380  0.859  0.380  1.0
  Co  Co7  1  0.859  0.380  0.380  1.0
  Co  Co8  1  0.380  0.380  0.380  1.0
  Co  Co9  1  1.000  0.000  0.339  1.0
  Co  Co10  1  0.661  0.000  0.339  1.0
  Co  Co11  1  0.000  0.661  0.339  1.0
  Co  Co12  1  0.661  0.339  0.000  1.0
  Co  Co13  1  1.000  0.339  0.000  1.0
  Co  Co14  1  0.000  0.339  0.661  1.0
  Co  Co15  1  0.339  0.661  0.000  1.0
  Co  Co16  1  0.339  0.000  0.661  1.0
  Co  Co17  1  0.339  0.000  1.000  1.0
  Co  Co18  1  1.000  1.000  0.661  1.0
  Co  Co19  1  1.000  0.661  1.000  1.0
  Co  Co20  1  0.661  1.000  1.000  1.0
  Ge  Ge21  1  0.750  0.750  0.750  1.0
  Ge  Ge22  1  0.250  0.250  0.250  1.0
  B  B23  1  0.721  0.721  0.279  1.0
  B  B24  1  0.279  0.721  0.279  1.0
  B  B25  1  0.721  0.279  0.279  1.0
  B  B26  1  0.279  0.279  0.721  1.0
  B  B27  1  0.721  0.279  0.721  1.0
  B  B28  1  0.279  0.721  0.721  1.0
[/CIF]
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