The crystal structure described by Tb7Co6Sn23 crystallizes in the trigonal P-3m1 space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 18-coordinate geometry to six equivalent Co(1), six equivalent Sn(1), and six equivalent Sn(6) atoms. In the second Tb site, Tb(2) is bonded in a 12-coordinate geometry to two equivalent Co(1), one Sn(2), one Sn(5), two equivalent Sn(1), two equivalent Sn(6), and four equivalent Sn(4) atoms. Co(1) is bonded in a 9-coordinate geometry to one Tb(1), two equivalent Tb(2), one Sn(2), one Sn(4), two equivalent Sn(1), and two equivalent Sn(6) atoms. There are six inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 2-coordinate geometry to one Tb(1), two equivalent Tb(2), and two equivalent Co(1) atoms. In the second Sn site, Sn(2) is bonded in a 7-coordinate geometry to three equivalent Tb(2), three equivalent Co(1), and one Sn(5) atom. In the third Sn site, Sn(3) is bonded in a 6-coordinate geometry to six equivalent Sn(6) atoms. In the fourth Sn site, Sn(4) is bonded in a distorted pentagonal planar geometry to four equivalent Tb(2), one Co(1), and one Sn(6) atom. In the fifth Sn site, Sn(5) is bonded in a 3-coordinate geometry to three equivalent Tb(2) and one Sn(2) atom. In the sixth Sn site, Sn(6) is bonded in a 7-coordinate geometry to one Tb(1), two equivalent Tb(2), two equivalent Co(1), one Sn(3), and one Sn(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tb7Co6Sn23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.686
_cell_length_b   9.687
_cell_length_c   9.870
_cell_angle_alpha   89.999
_cell_angle_beta   90.002
_cell_angle_gamma   120.003
_symmetry_Int_Tables_number   1
_cell_volume   801.949
_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
  Tb  Tb0  1  1.000  1.000  0.000  1.0
  Tb  Tb1  1  0.478  0.522  0.306  1.0
  Tb  Tb2  1  0.522  0.478  0.694  1.0
  Tb  Tb3  1  0.478  0.956  0.306  1.0
  Tb  Tb4  1  0.522  0.044  0.694  1.0
  Tb  Tb5  1  0.044  0.522  0.306  1.0
  Tb  Tb6  1  0.956  0.478  0.694  1.0
  Co  Co7  1  0.833  0.167  0.197  1.0
  Co  Co8  1  0.167  0.833  0.803  1.0
  Co  Co9  1  0.833  0.666  0.197  1.0
  Co  Co10  1  0.167  0.334  0.803  1.0
  Co  Co11  1  0.334  0.167  0.197  1.0
  Co  Co12  1  0.666  0.833  0.803  1.0
  Sn  Sn13  1  0.347  0.000  0.000  1.0
  Sn  Sn14  1  0.653  0.000  1.000  1.0
  Sn  Sn15  1  1.000  0.347  1.000  1.0
  Sn  Sn16  1  1.000  0.653  0.000  1.0
  Sn  Sn17  1  0.653  0.653  1.000  1.0
  Sn  Sn18  1  0.347  0.347  0.000  1.0
  Sn  Sn19  1  0.333  0.667  0.819  1.0
  Sn  Sn20  1  0.667  0.333  0.181  1.0
  Sn  Sn21  1  1.000  1.000  0.500  1.0
  Sn  Sn22  1  0.781  0.219  0.451  1.0
  Sn  Sn23  1  0.219  0.781  0.549  1.0
  Sn  Sn24  1  0.781  0.562  0.451  1.0
  Sn  Sn25  1  0.219  0.438  0.549  1.0
  Sn  Sn26  1  0.438  0.219  0.451  1.0
  Sn  Sn27  1  0.562  0.781  0.549  1.0
  Sn  Sn28  1  0.333  0.667  0.113  1.0
  Sn  Sn29  1  0.667  0.333  0.887  1.0
  Sn  Sn30  1  0.116  0.884  0.275  1.0
  Sn  Sn31  1  0.884  0.116  0.725  1.0
  Sn  Sn32  1  0.116  0.233  0.275  1.0
  Sn  Sn33  1  0.883  0.767  0.725  1.0
  Sn  Sn34  1  0.767  0.884  0.275  1.0
  Sn  Sn35  1  0.233  0.117  0.725  1.0
[/CIF]
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The crystal structure described by Tb7Co6Sn23 crystallizes in the trigonal P-3m1 space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 18-coordinate geometry to six equivalent Co(1), six equivalent Sn(1), and six equivalent Sn(6) atoms. In the second Tb site, Tb(2) is bonded in a 12-coordinate geometry to two equivalent Co(1), one Sn(2), one Sn(5), two equivalent Sn(1), two equivalent Sn(6), and four equivalent Sn(4) atoms. Co(1) is bonded in a 9-coordinate geometry to one Tb(1), two equivalent Tb(2), one Sn(2), one Sn(4), two equivalent Sn(1), and two equivalent Sn(6) atoms. There are six inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 2-coordinate geometry to one Tb(1), two equivalent Tb(2), and two equivalent Co(1) atoms. In the second Sn site, Sn(2) is bonded in a 7-coordinate geometry to three equivalent Tb(2), three equivalent Co(1), and one Sn(5) atom. In the third Sn site, Sn(3) is bonded in a 6-coordinate geometry to six equivalent Sn(6) atoms. In the fourth Sn site, Sn(4) is bonded in a distorted pentagonal planar geometry to four equivalent Tb(2), one Co(1), and one Sn(6) atom. In the fifth Sn site, Sn(5) is bonded in a 3-coordinate geometry to three equivalent Tb(2) and one Sn(2) atom. In the sixth Sn site, Sn(6) is bonded in a 7-coordinate geometry to one Tb(1), two equivalent Tb(2), two equivalent Co(1), one Sn(3), and one Sn(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tb7Co6Sn23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.686
_cell_length_b   9.687
_cell_length_c   9.870
_cell_angle_alpha   89.999
_cell_angle_beta   90.002
_cell_angle_gamma   120.003
_symmetry_Int_Tables_number   1
_cell_volume   801.949
_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
  Tb  Tb0  1  1.000  1.000  0.000  1.0
  Tb  Tb1  1  0.478  0.522  0.306  1.0
  Tb  Tb2  1  0.522  0.478  0.694  1.0
  Tb  Tb3  1  0.478  0.956  0.306  1.0
  Tb  Tb4  1  0.522  0.044  0.694  1.0
  Tb  Tb5  1  0.044  0.522  0.306  1.0
  Tb  Tb6  1  0.956  0.478  0.694  1.0
  Co  Co7  1  0.833  0.167  0.197  1.0
  Co  Co8  1  0.167  0.833  0.803  1.0
  Co  Co9  1  0.833  0.666  0.197  1.0
  Co  Co10  1  0.167  0.334  0.803  1.0
  Co  Co11  1  0.334  0.167  0.197  1.0
  Co  Co12  1  0.666  0.833  0.803  1.0
  Sn  Sn13  1  0.347  0.000  0.000  1.0
  Sn  Sn14  1  0.653  0.000  1.000  1.0
  Sn  Sn15  1  1.000  0.347  1.000  1.0
  Sn  Sn16  1  1.000  0.653  0.000  1.0
  Sn  Sn17  1  0.653  0.653  1.000  1.0
  Sn  Sn18  1  0.347  0.347  0.000  1.0
  Sn  Sn19  1  0.333  0.667  0.819  1.0
  Sn  Sn20  1  0.667  0.333  0.181  1.0
  Sn  Sn21  1  1.000  1.000  0.500  1.0
  Sn  Sn22  1  0.781  0.219  0.451  1.0
  Sn  Sn23  1  0.219  0.781  0.549  1.0
  Sn  Sn24  1  0.781  0.562  0.451  1.0
  Sn  Sn25  1  0.219  0.438  0.549  1.0
  Sn  Sn26  1  0.438  0.219  0.451  1.0
  Sn  Sn27  1  0.562  0.781  0.549  1.0
  Sn  Sn28  1  0.333  0.667  0.113  1.0
  Sn  Sn29  1  0.667  0.333  0.887  1.0
  Sn  Sn30  1  0.116  0.884  0.275  1.0
  Sn  Sn31  1  0.884  0.116  0.725  1.0
  Sn  Sn32  1  0.116  0.233  0.275  1.0
  Sn  Sn33  1  0.883  0.767  0.725  1.0
  Sn  Sn34  1  0.767  0.884  0.275  1.0
  Sn  Sn35  1  0.233  0.117  0.725  1.0
[/CIF]
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