The structure described by Tb2Fe2Si2C crystallizes in the monoclinic C2/m space group. Tb(1) is bonded in a 2-coordinate geometry to five equivalent Si(1) and two equivalent C(1) atoms. Fe(1) is bonded in a distorted single-bond geometry to three equivalent Si(1) and one C(1) atom. Si(1) is bonded in a 9-coordinate geometry to five equivalent Tb(1), three equivalent Fe(1), and one Si(1) atom. C(1) is bonded to four equivalent Tb(1) and two equivalent Fe(1) atoms to form distorted edge-sharing CTb4Fe2 octahedra. is represented by the CIF card [CIF]
data_Tb2Fe2Si2C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.650
_cell_length_b   5.650
_cell_length_c   6.765
_cell_angle_alpha   53.457
_cell_angle_beta   53.457
_cell_angle_gamma   40.795
_symmetry_Int_Tables_number   1
_cell_volume   108.985
_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  0.059  0.059  0.206  1.0
  Tb  Tb1  1  0.941  0.941  0.794  1.0
  Fe  Fe2  1  0.300  0.300  0.595  1.0
  Fe  Fe3  1  0.700  0.700  0.405  1.0
  Si  Si4  1  0.337  0.337  0.219  1.0
  Si  Si5  1  0.663  0.663  0.781  1.0
  C  C6  1  0.500  0.500  0.500  1.0
[/CIF]
.
The structure described by Tb2Fe2Si2C crystallizes in the monoclinic C2/m space group. Tb(1) is bonded in a 2-coordinate geometry to five equivalent Si(1) and two equivalent C(1) atoms. Fe(1) is bonded in a distorted single-bond geometry to three equivalent Si(1) and one C(1) atom. Si(1) is bonded in a 9-coordinate geometry to five equivalent Tb(1), three equivalent Fe(1), and one Si(1) atom. C(1) is bonded to four equivalent Tb(1) and two equivalent Fe(1) atoms to form distorted edge-sharing CTb4Fe2 octahedra. is represented by the CIF card [CIF]
data_Tb2Fe2Si2C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.650
_cell_length_b   5.650
_cell_length_c   6.765
_cell_angle_alpha   53.457
_cell_angle_beta   53.457
_cell_angle_gamma   40.795
_symmetry_Int_Tables_number   1
_cell_volume   108.985
_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  0.059  0.059  0.206  1.0
  Tb  Tb1  1  0.941  0.941  0.794  1.0
  Fe  Fe2  1  0.300  0.300  0.595  1.0
  Fe  Fe3  1  0.700  0.700  0.405  1.0
  Si  Si4  1  0.337  0.337  0.219  1.0
  Si  Si5  1  0.663  0.663  0.781  1.0
  C  C6  1  0.500  0.500  0.500  1.0
[/CIF]
.