The material described by Tm2Ni2Sn crystallizes in the tetragonal P4/mbm space group. Tm(1) is bonded in a 10-coordinate geometry to six equivalent Ni(1) and four equivalent Sn(1) atoms. Ni(1) is bonded in a 9-coordinate geometry to six equivalent Tm(1), one Ni(1), and two equivalent Sn(1) atoms. Sn(1) is bonded to eight equivalent Tm(1) and four equivalent Ni(1) atoms to form a mixture of face and corner-sharing SnTm8Ni4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tm2Ni2Sn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.233
_cell_length_b   7.233
_cell_length_c   3.592
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   187.929
_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  0.673  0.173  0.500  1.0
  Tm  Tm1  1  0.327  0.827  0.500  1.0
  Tm  Tm2  1  0.173  0.327  0.500  1.0
  Tm  Tm3  1  0.827  0.673  0.500  1.0
  Ni  Ni4  1  0.879  0.379  0.000  1.0
  Ni  Ni5  1  0.121  0.621  0.000  1.0
  Ni  Ni6  1  0.379  0.121  0.000  1.0
  Ni  Ni7  1  0.621  0.879  0.000  1.0
  Sn  Sn8  1  0.500  0.500  0.000  1.0
  Sn  Sn9  1  0.000  0.000  0.000  1.0
[/CIF]
.
The material described by Tm2Ni2Sn crystallizes in the tetragonal P4/mbm space group. Tm(1) is bonded in a 10-coordinate geometry to six equivalent Ni(1) and four equivalent Sn(1) atoms. Ni(1) is bonded in a 9-coordinate geometry to six equivalent Tm(1), one Ni(1), and two equivalent Sn(1) atoms. Sn(1) is bonded to eight equivalent Tm(1) and four equivalent Ni(1) atoms to form a mixture of face and corner-sharing SnTm8Ni4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tm2Ni2Sn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.233
_cell_length_b   7.233
_cell_length_c   3.592
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   187.929
_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  0.673  0.173  0.500  1.0
  Tm  Tm1  1  0.327  0.827  0.500  1.0
  Tm  Tm2  1  0.173  0.327  0.500  1.0
  Tm  Tm3  1  0.827  0.673  0.500  1.0
  Ni  Ni4  1  0.879  0.379  0.000  1.0
  Ni  Ni5  1  0.121  0.621  0.000  1.0
  Ni  Ni6  1  0.379  0.121  0.000  1.0
  Ni  Ni7  1  0.621  0.879  0.000  1.0
  Sn  Sn8  1  0.500  0.500  0.000  1.0
  Sn  Sn9  1  0.000  0.000  0.000  1.0
[/CIF]
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