The compound described by Ta6Co16Ge7 crystallizes in the cubic Fm-3m space group. Ta(1) is bonded in a 12-coordinate geometry to four equivalent Co(1), four equivalent Co(2), and four equivalent Ge(1) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 13-coordinate geometry to three equivalent Ta(1), three equivalent Co(1), three equivalent Co(2), one Ge(2), and three equivalent Ge(1) atoms. In the second Co site, Co(2) is bonded in a 6-coordinate geometry to three equivalent Ta(1), three equivalent Co(1), and three equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(2) is bonded in a body-centered cubic geometry to eight equivalent Co(1) atoms. In the second Ge site, Ge(1) is bonded to four equivalent Ta(1), four equivalent Co(1), and four equivalent Co(2) atoms to form a mixture of distorted face and corner-sharing GeTa4Co8 cuboctahedra. is represented by the CIF card [CIF]
data_Ta6Co16Ge7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.976
_cell_length_b   7.976
_cell_length_c   7.976
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   358.765
_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
  Ta  Ta0  1  0.702  0.298  0.298  1.0
  Ta  Ta1  1  0.702  0.298  0.702  1.0
  Ta  Ta2  1  0.298  0.702  0.702  1.0
  Ta  Ta3  1  0.298  0.702  0.298  1.0
  Ta  Ta4  1  0.298  0.298  0.702  1.0
  Ta  Ta5  1  0.702  0.702  0.298  1.0
  Co  Co6  1  0.881  0.881  0.881  1.0
  Co  Co7  1  0.999  0.334  0.334  1.0
  Co  Co8  1  0.119  0.119  0.642  1.0
  Co  Co9  1  0.666  0.666  0.001  1.0
  Co  Co10  1  0.334  0.334  0.999  1.0
  Co  Co11  1  0.666  0.666  0.666  1.0
  Co  Co12  1  0.334  0.334  0.334  1.0
  Co  Co13  1  0.881  0.881  0.358  1.0
  Co  Co14  1  0.334  0.999  0.334  1.0
  Co  Co15  1  0.119  0.119  0.119  1.0
  Co  Co16  1  0.881  0.358  0.881  1.0
  Co  Co17  1  0.642  0.119  0.119  1.0
  Co  Co18  1  0.119  0.642  0.119  1.0
  Co  Co19  1  0.666  0.001  0.666  1.0
  Co  Co20  1  0.358  0.881  0.881  1.0
  Co  Co21  1  0.001  0.666  0.666  1.0
  Ge  Ge22  1  0.500  0.500  1.000  1.0
  Ge  Ge23  1  1.000  0.500  1.000  1.0
  Ge  Ge24  1  0.000  0.000  1.000  1.0
  Ge  Ge25  1  0.500  1.000  0.500  1.0
  Ge  Ge26  1  1.000  1.000  0.500  1.0
  Ge  Ge27  1  1.000  0.500  0.500  1.0
  Ge  Ge28  1  0.500  1.000  1.000  1.0
[/CIF]
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The compound described by Ta6Co16Ge7 crystallizes in the cubic Fm-3m space group. Ta(1) is bonded in a 12-coordinate geometry to four equivalent Co(1), four equivalent Co(2), and four equivalent Ge(1) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 13-coordinate geometry to three equivalent Ta(1), three equivalent Co(1), three equivalent Co(2), one Ge(2), and three equivalent Ge(1) atoms. In the second Co site, Co(2) is bonded in a 6-coordinate geometry to three equivalent Ta(1), three equivalent Co(1), and three equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(2) is bonded in a body-centered cubic geometry to eight equivalent Co(1) atoms. In the second Ge site, Ge(1) is bonded to four equivalent Ta(1), four equivalent Co(1), and four equivalent Co(2) atoms to form a mixture of distorted face and corner-sharing GeTa4Co8 cuboctahedra. is represented by the CIF card [CIF]
data_Ta6Co16Ge7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.976
_cell_length_b   7.976
_cell_length_c   7.976
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   358.765
_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
  Ta  Ta0  1  0.702  0.298  0.298  1.0
  Ta  Ta1  1  0.702  0.298  0.702  1.0
  Ta  Ta2  1  0.298  0.702  0.702  1.0
  Ta  Ta3  1  0.298  0.702  0.298  1.0
  Ta  Ta4  1  0.298  0.298  0.702  1.0
  Ta  Ta5  1  0.702  0.702  0.298  1.0
  Co  Co6  1  0.881  0.881  0.881  1.0
  Co  Co7  1  0.999  0.334  0.334  1.0
  Co  Co8  1  0.119  0.119  0.642  1.0
  Co  Co9  1  0.666  0.666  0.001  1.0
  Co  Co10  1  0.334  0.334  0.999  1.0
  Co  Co11  1  0.666  0.666  0.666  1.0
  Co  Co12  1  0.334  0.334  0.334  1.0
  Co  Co13  1  0.881  0.881  0.358  1.0
  Co  Co14  1  0.334  0.999  0.334  1.0
  Co  Co15  1  0.119  0.119  0.119  1.0
  Co  Co16  1  0.881  0.358  0.881  1.0
  Co  Co17  1  0.642  0.119  0.119  1.0
  Co  Co18  1  0.119  0.642  0.119  1.0
  Co  Co19  1  0.666  0.001  0.666  1.0
  Co  Co20  1  0.358  0.881  0.881  1.0
  Co  Co21  1  0.001  0.666  0.666  1.0
  Ge  Ge22  1  0.500  0.500  1.000  1.0
  Ge  Ge23  1  1.000  0.500  1.000  1.0
  Ge  Ge24  1  0.000  0.000  1.000  1.0
  Ge  Ge25  1  0.500  1.000  0.500  1.0
  Ge  Ge26  1  1.000  1.000  0.500  1.0
  Ge  Ge27  1  1.000  0.500  0.500  1.0
  Ge  Ge28  1  0.500  1.000  1.000  1.0
[/CIF]
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