The material described by Tm2CoSi2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 10-coordinate geometry to four equivalent Co(1), two equivalent Si(2), and five equivalent Si(1) atoms. In the second Tm site, Tm(2) is bonded in a 6-coordinate geometry to two equivalent Co(1), one Si(1), and five equivalent Si(2) atoms. Co(1) is bonded in a 10-coordinate geometry to two equivalent Tm(2), four equivalent Tm(1), one Si(2), and three equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 10-coordinate geometry to one Tm(2), five equivalent Tm(1), three equivalent Co(1), and one Si(1) atom. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Tm(1), five equivalent Tm(2), one Co(1), and one Si(2) atom. is represented by the CIF card [CIF]
data_Tm2CoSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.475
_cell_length_b   5.475
_cell_length_c   9.852
_cell_angle_alpha   63.207
_cell_angle_beta   63.207
_cell_angle_gamma   44.024
_symmetry_Int_Tables_number   1
_cell_volume   179.345
_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
  Tm  Tm0  1  0.998  0.998  0.329  1.0
  Tm  Tm1  1  0.002  0.002  0.671  1.0
  Tm  Tm2  1  0.812  0.812  0.105  1.0
  Tm  Tm3  1  0.188  0.188  0.895  1.0
  Co  Co4  1  0.728  0.728  0.627  1.0
  Co  Co5  1  0.272  0.272  0.373  1.0
  Si  Si6  1  0.650  0.650  0.435  1.0
  Si  Si7  1  0.350  0.350  0.565  1.0
  Si  Si8  1  0.505  0.505  0.125  1.0
  Si  Si9  1  0.495  0.495  0.875  1.0
[/CIF]
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The material described by Tm2CoSi2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 10-coordinate geometry to four equivalent Co(1), two equivalent Si(2), and five equivalent Si(1) atoms. In the second Tm site, Tm(2) is bonded in a 6-coordinate geometry to two equivalent Co(1), one Si(1), and five equivalent Si(2) atoms. Co(1) is bonded in a 10-coordinate geometry to two equivalent Tm(2), four equivalent Tm(1), one Si(2), and three equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 10-coordinate geometry to one Tm(2), five equivalent Tm(1), three equivalent Co(1), and one Si(1) atom. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Tm(1), five equivalent Tm(2), one Co(1), and one Si(2) atom. is represented by the CIF card [CIF]
data_Tm2CoSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.475
_cell_length_b   5.475
_cell_length_c   9.852
_cell_angle_alpha   63.207
_cell_angle_beta   63.207
_cell_angle_gamma   44.024
_symmetry_Int_Tables_number   1
_cell_volume   179.345
_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
  Tm  Tm0  1  0.998  0.998  0.329  1.0
  Tm  Tm1  1  0.002  0.002  0.671  1.0
  Tm  Tm2  1  0.812  0.812  0.105  1.0
  Tm  Tm3  1  0.188  0.188  0.895  1.0
  Co  Co4  1  0.728  0.728  0.627  1.0
  Co  Co5  1  0.272  0.272  0.373  1.0
  Si  Si6  1  0.650  0.650  0.435  1.0
  Si  Si7  1  0.350  0.350  0.565  1.0
  Si  Si8  1  0.505  0.505  0.125  1.0
  Si  Si9  1  0.495  0.495  0.875  1.0
[/CIF]
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