The structure described by Tm2Fe2Si2C crystallizes in the monoclinic C2/m space group. Tm(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 Tm(1), three equivalent Fe(1), and one Si(1) atom. C(1) is bonded to four equivalent Tm(1) and two equivalent Fe(1) atoms to form distorted edge-sharing CTm4Fe2 octahedra. is represented by the CIF file [CIF]
data_Tm2Fe2Si2C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.585
_cell_length_b   5.585
_cell_length_c   6.642
_cell_angle_alpha   53.511
_cell_angle_beta   53.511
_cell_angle_gamma   40.771
_symmetry_Int_Tables_number   1
_cell_volume   104.574
_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
  Tm  Tm0  1  0.559  0.559  0.708  1.0
  Tm  Tm1  1  0.441  0.441  0.292  1.0
  Fe  Fe2  1  0.202  0.202  0.902  1.0
  Fe  Fe3  1  0.798  0.798  0.098  1.0
  Si  Si4  1  0.159  0.159  0.289  1.0
  Si  Si5  1  0.841  0.841  0.711  1.0
  C  C6  1  0.000  0.000  0.000  1.0
[/CIF]
.
The structure described by Tm2Fe2Si2C crystallizes in the monoclinic C2/m space group. Tm(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 Tm(1), three equivalent Fe(1), and one Si(1) atom. C(1) is bonded to four equivalent Tm(1) and two equivalent Fe(1) atoms to form distorted edge-sharing CTm4Fe2 octahedra. is represented by the CIF file [CIF]
data_Tm2Fe2Si2C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.585
_cell_length_b   5.585
_cell_length_c   6.642
_cell_angle_alpha   53.511
_cell_angle_beta   53.511
_cell_angle_gamma   40.771
_symmetry_Int_Tables_number   1
_cell_volume   104.574
_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
  Tm  Tm0  1  0.559  0.559  0.708  1.0
  Tm  Tm1  1  0.441  0.441  0.292  1.0
  Fe  Fe2  1  0.202  0.202  0.902  1.0
  Fe  Fe3  1  0.798  0.798  0.098  1.0
  Si  Si4  1  0.159  0.159  0.289  1.0
  Si  Si5  1  0.841  0.841  0.711  1.0
  C  C6  1  0.000  0.000  0.000  1.0
[/CIF]
.