The material structure described by TmNiSi2 crystallizes in the orthorhombic Cmcm space group. Tm(1) is bonded in a 14-coordinate geometry to four equivalent Ni(1), four equivalent Si(2), and six equivalent Si(1) atoms. Ni(1) is bonded in a 9-coordinate geometry to four equivalent Tm(1), one Si(1), and four equivalent Si(2) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Tm(1), one Ni(1), and two equivalent Si(1) atoms. In the second Si site, Si(2) is bonded in a 12-coordinate geometry to four equivalent Tm(1), four equivalent Ni(1), and four equivalent Si(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_TmSi2Ni
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.921
_cell_length_b   3.897
_cell_length_c   8.420
_cell_angle_alpha   90.000
_cell_angle_beta   103.464
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   125.127
_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  0.606  0.250  0.211  1.0
  Tm  Tm1  1  0.394  0.750  0.789  1.0
  Si  Si2  1  0.960  0.250  0.920  1.0
  Si  Si3  1  0.040  0.750  0.080  1.0
  Si  Si4  1  0.250  0.250  0.500  1.0
  Si  Si5  1  0.750  0.750  0.500  1.0
  Ni  Ni6  1  0.824  0.250  0.647  1.0
  Ni  Ni7  1  0.176  0.750  0.353  1.0
[/CIF]
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The material structure described by TmNiSi2 crystallizes in the orthorhombic Cmcm space group. Tm(1) is bonded in a 14-coordinate geometry to four equivalent Ni(1), four equivalent Si(2), and six equivalent Si(1) atoms. Ni(1) is bonded in a 9-coordinate geometry to four equivalent Tm(1), one Si(1), and four equivalent Si(2) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Tm(1), one Ni(1), and two equivalent Si(1) atoms. In the second Si site, Si(2) is bonded in a 12-coordinate geometry to four equivalent Tm(1), four equivalent Ni(1), and four equivalent Si(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_TmSi2Ni
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.921
_cell_length_b   3.897
_cell_length_c   8.420
_cell_angle_alpha   90.000
_cell_angle_beta   103.464
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   125.127
_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  0.606  0.250  0.211  1.0
  Tm  Tm1  1  0.394  0.750  0.789  1.0
  Si  Si2  1  0.960  0.250  0.920  1.0
  Si  Si3  1  0.040  0.750  0.080  1.0
  Si  Si4  1  0.250  0.250  0.500  1.0
  Si  Si5  1  0.750  0.750  0.500  1.0
  Ni  Ni6  1  0.824  0.250  0.647  1.0
  Ni  Ni7  1  0.176  0.750  0.353  1.0
[/CIF]
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