The material structure described by Tb2CoGe2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 9-coordinate geometry to two equivalent Co(1), three equivalent Ge(2), and four equivalent Ge(1) atoms. In the second Tb site, Tb(2) is bonded in a 9-coordinate geometry to four equivalent Co(1), two equivalent Ge(1), and three equivalent Ge(2) atoms. Co(1) is bonded in a 10-coordinate geometry to two equivalent Tb(1), four equivalent Tb(2), one Co(1), one Ge(2), and two equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Tb(2), four equivalent Tb(1), two equivalent Co(1), and one Ge(1) atom. In the second Ge site, Ge(2) is bonded to three equivalent Tb(1), three equivalent Tb(2), and one Co(1) atom to form distorted edge-sharing GeTb6Co pentagonal bipyramids. is represented by the CIF card [CIF]
data_Tb2CoGe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.140
_cell_length_b   7.140
_cell_length_c   7.489
_cell_angle_alpha   81.592
_cell_angle_beta   81.592
_cell_angle_gamma   33.822
_symmetry_Int_Tables_number   1
_cell_volume   210.025
_cell_formula_units_Z   2
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
  Tb  Tb0  1  0.639  0.639  0.415  1.0
  Tb  Tb1  1  0.131  0.131  0.997  1.0
  Tb  Tb2  1  0.869  0.869  0.003  1.0
  Tb  Tb3  1  0.361  0.361  0.585  1.0
  Co  Co4  1  0.471  0.471  0.168  1.0
  Co  Co5  1  0.529  0.529  0.832  1.0
  Ge  Ge6  1  0.018  0.018  0.667  1.0
  Ge  Ge7  1  0.281  0.281  0.250  1.0
  Ge  Ge8  1  0.719  0.719  0.750  1.0
  Ge  Ge9  1  0.982  0.982  0.333  1.0
[/CIF]
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The material structure described by Tb2CoGe2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 9-coordinate geometry to two equivalent Co(1), three equivalent Ge(2), and four equivalent Ge(1) atoms. In the second Tb site, Tb(2) is bonded in a 9-coordinate geometry to four equivalent Co(1), two equivalent Ge(1), and three equivalent Ge(2) atoms. Co(1) is bonded in a 10-coordinate geometry to two equivalent Tb(1), four equivalent Tb(2), one Co(1), one Ge(2), and two equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Tb(2), four equivalent Tb(1), two equivalent Co(1), and one Ge(1) atom. In the second Ge site, Ge(2) is bonded to three equivalent Tb(1), three equivalent Tb(2), and one Co(1) atom to form distorted edge-sharing GeTb6Co pentagonal bipyramids. is represented by the CIF card [CIF]
data_Tb2CoGe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.140
_cell_length_b   7.140
_cell_length_c   7.489
_cell_angle_alpha   81.592
_cell_angle_beta   81.592
_cell_angle_gamma   33.822
_symmetry_Int_Tables_number   1
_cell_volume   210.025
_cell_formula_units_Z   2
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
  Tb  Tb0  1  0.639  0.639  0.415  1.0
  Tb  Tb1  1  0.131  0.131  0.997  1.0
  Tb  Tb2  1  0.869  0.869  0.003  1.0
  Tb  Tb3  1  0.361  0.361  0.585  1.0
  Co  Co4  1  0.471  0.471  0.168  1.0
  Co  Co5  1  0.529  0.529  0.832  1.0
  Ge  Ge6  1  0.018  0.018  0.667  1.0
  Ge  Ge7  1  0.281  0.281  0.250  1.0
  Ge  Ge8  1  0.719  0.719  0.750  1.0
  Ge  Ge9  1  0.982  0.982  0.333  1.0
[/CIF]
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