The compound described by Tb12Co7 crystallizes in the monoclinic P2_1/c space group. There are six inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 5-coordinate geometry to one Co(1), one Co(2), one Co(3), and two equivalent Co(4) atoms. In the second Tb site, Tb(2) is bonded in a 4-coordinate geometry to one Co(2), one Co(4), and two equivalent Co(3) atoms. In the third Tb site, Tb(3) is bonded in a 4-coordinate geometry to one Co(2), one Co(4), and two equivalent Co(3) atoms. In the fourth Tb site, Tb(4) is bonded in a 5-coordinate geometry to one Co(1), one Co(2), one Co(3), and two equivalent Co(4) atoms. In the fifth Tb site, Tb(5) is bonded to one Co(1), one Co(2), one Co(3), and one Co(4) atom to form distorted corner-sharing TbCo4 tetrahedra. In the sixth Tb site, Tb(6) is bonded in a 5-coordinate geometry to one Co(1), one Co(3), one Co(4), and two equivalent Co(2) atoms. There are four inequivalent Co sites. In the first Co site, Co(4) is bonded in a 9-coordinate geometry to one Tb(2), one Tb(3), one Tb(5), one Tb(6), two equivalent Tb(1), two equivalent Tb(4), and one Co(2) atom. In the second Co site, Co(1) is bonded in a body-centered cubic geometry to two equivalent Tb(1), two equivalent Tb(4), two equivalent Tb(5), and two equivalent Tb(6) atoms. In the third Co site, Co(2) is bonded in a 8-coordinate geometry to one Tb(1), one Tb(2), one Tb(3), one Tb(4), one Tb(5), two equivalent Tb(6), and one Co(4) atom. In the fourth Co site, Co(3) is bonded in a 8-coordinate geometry to one Tb(1), one Tb(4), one Tb(5), one Tb(6), two equivalent Tb(2), and two equivalent Tb(3) atoms. is represented by the CIF card [CIF]
data_Tb12Co7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.304
_cell_length_b   8.319
_cell_length_c   11.081
_cell_angle_alpha   54.523
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   848.503
_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  0.706  0.234  0.539  1.0
  Tb  Tb1  1  0.206  0.766  0.961  1.0
  Tb  Tb2  1  0.840  0.502  0.658  1.0
  Tb  Tb3  1  0.340  0.498  0.842  1.0
  Tb  Tb4  1  0.160  0.498  0.342  1.0
  Tb  Tb5  1  0.660  0.502  0.158  1.0
  Tb  Tb6  1  0.004  0.842  0.354  1.0
  Tb  Tb7  1  0.504  0.158  0.146  1.0
  Tb  Tb8  1  0.996  0.158  0.646  1.0
  Tb  Tb9  1  0.496  0.842  0.854  1.0
  Tb  Tb10  1  0.794  0.234  0.039  1.0
  Tb  Tb11  1  0.294  0.766  0.461  1.0
  Tb  Tb12  1  0.929  0.768  0.086  1.0
  Tb  Tb13  1  0.429  0.232  0.414  1.0
  Tb  Tb14  1  0.071  0.232  0.914  1.0
  Tb  Tb15  1  0.571  0.768  0.586  1.0
  Tb  Tb16  1  0.301  0.249  0.676  1.0
  Tb  Tb17  1  0.801  0.751  0.824  1.0
  Tb  Tb18  1  0.699  0.751  0.324  1.0
  Tb  Tb19  1  0.199  0.249  0.176  1.0
  Tb  Tb20  1  0.930  0.262  0.309  1.0
  Tb  Tb21  1  0.430  0.738  0.191  1.0
  Tb  Tb22  1  0.070  0.738  0.691  1.0
  Tb  Tb23  1  0.570  0.262  0.809  1.0
  Co  Co24  1  0.500  0.500  0.500  1.0
  Co  Co25  1  0.000  0.500  0.000  1.0
  Co  Co26  1  0.678  0.906  0.028  1.0
  Co  Co27  1  0.178  0.094  0.472  1.0
  Co  Co28  1  0.322  0.094  0.972  1.0
  Co  Co29  1  0.822  0.906  0.528  1.0
  Co  Co30  1  0.400  0.496  0.100  1.0
  Co  Co31  1  0.900  0.504  0.400  1.0
  Co  Co32  1  0.600  0.504  0.900  1.0
  Co  Co33  1  0.100  0.496  0.600  1.0
  Co  Co34  1  0.811  0.099  0.841  1.0
  Co  Co35  1  0.311  0.901  0.659  1.0
  Co  Co36  1  0.189  0.901  0.159  1.0
  Co  Co37  1  0.689  0.099  0.341  1.0
[/CIF]
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The compound described by Tb12Co7 crystallizes in the monoclinic P2_1/c space group. There are six inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 5-coordinate geometry to one Co(1), one Co(2), one Co(3), and two equivalent Co(4) atoms. In the second Tb site, Tb(2) is bonded in a 4-coordinate geometry to one Co(2), one Co(4), and two equivalent Co(3) atoms. In the third Tb site, Tb(3) is bonded in a 4-coordinate geometry to one Co(2), one Co(4), and two equivalent Co(3) atoms. In the fourth Tb site, Tb(4) is bonded in a 5-coordinate geometry to one Co(1), one Co(2), one Co(3), and two equivalent Co(4) atoms. In the fifth Tb site, Tb(5) is bonded to one Co(1), one Co(2), one Co(3), and one Co(4) atom to form distorted corner-sharing TbCo4 tetrahedra. In the sixth Tb site, Tb(6) is bonded in a 5-coordinate geometry to one Co(1), one Co(3), one Co(4), and two equivalent Co(2) atoms. There are four inequivalent Co sites. In the first Co site, Co(4) is bonded in a 9-coordinate geometry to one Tb(2), one Tb(3), one Tb(5), one Tb(6), two equivalent Tb(1), two equivalent Tb(4), and one Co(2) atom. In the second Co site, Co(1) is bonded in a body-centered cubic geometry to two equivalent Tb(1), two equivalent Tb(4), two equivalent Tb(5), and two equivalent Tb(6) atoms. In the third Co site, Co(2) is bonded in a 8-coordinate geometry to one Tb(1), one Tb(2), one Tb(3), one Tb(4), one Tb(5), two equivalent Tb(6), and one Co(4) atom. In the fourth Co site, Co(3) is bonded in a 8-coordinate geometry to one Tb(1), one Tb(4), one Tb(5), one Tb(6), two equivalent Tb(2), and two equivalent Tb(3) atoms. is represented by the CIF card [CIF]
data_Tb12Co7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.304
_cell_length_b   8.319
_cell_length_c   11.081
_cell_angle_alpha   54.523
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   848.503
_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  0.706  0.234  0.539  1.0
  Tb  Tb1  1  0.206  0.766  0.961  1.0
  Tb  Tb2  1  0.840  0.502  0.658  1.0
  Tb  Tb3  1  0.340  0.498  0.842  1.0
  Tb  Tb4  1  0.160  0.498  0.342  1.0
  Tb  Tb5  1  0.660  0.502  0.158  1.0
  Tb  Tb6  1  0.004  0.842  0.354  1.0
  Tb  Tb7  1  0.504  0.158  0.146  1.0
  Tb  Tb8  1  0.996  0.158  0.646  1.0
  Tb  Tb9  1  0.496  0.842  0.854  1.0
  Tb  Tb10  1  0.794  0.234  0.039  1.0
  Tb  Tb11  1  0.294  0.766  0.461  1.0
  Tb  Tb12  1  0.929  0.768  0.086  1.0
  Tb  Tb13  1  0.429  0.232  0.414  1.0
  Tb  Tb14  1  0.071  0.232  0.914  1.0
  Tb  Tb15  1  0.571  0.768  0.586  1.0
  Tb  Tb16  1  0.301  0.249  0.676  1.0
  Tb  Tb17  1  0.801  0.751  0.824  1.0
  Tb  Tb18  1  0.699  0.751  0.324  1.0
  Tb  Tb19  1  0.199  0.249  0.176  1.0
  Tb  Tb20  1  0.930  0.262  0.309  1.0
  Tb  Tb21  1  0.430  0.738  0.191  1.0
  Tb  Tb22  1  0.070  0.738  0.691  1.0
  Tb  Tb23  1  0.570  0.262  0.809  1.0
  Co  Co24  1  0.500  0.500  0.500  1.0
  Co  Co25  1  0.000  0.500  0.000  1.0
  Co  Co26  1  0.678  0.906  0.028  1.0
  Co  Co27  1  0.178  0.094  0.472  1.0
  Co  Co28  1  0.322  0.094  0.972  1.0
  Co  Co29  1  0.822  0.906  0.528  1.0
  Co  Co30  1  0.400  0.496  0.100  1.0
  Co  Co31  1  0.900  0.504  0.400  1.0
  Co  Co32  1  0.600  0.504  0.900  1.0
  Co  Co33  1  0.100  0.496  0.600  1.0
  Co  Co34  1  0.811  0.099  0.841  1.0
  Co  Co35  1  0.311  0.901  0.659  1.0
  Co  Co36  1  0.189  0.901  0.159  1.0
  Co  Co37  1  0.689  0.099  0.341  1.0
[/CIF]
.