The crystal structure described by TbMgSn crystallizes in the tetragonal I4/mmm space group. Mg(1) is bonded to four equivalent Mg(1), four equivalent Tb(1), and four equivalent Sn(1) atoms to form distorted MgTb4Mg4Sn4 cuboctahedra that share corners with four equivalent Mg(1)Tb4Mg4Sn4 cuboctahedra, corners with four equivalent Tb(1)Mg4Sn5 square pyramids, edges with eight equivalent Tb(1)Mg4Sn5 square pyramids, faces with eight equivalent Mg(1)Tb4Mg4Sn4 cuboctahedra, and faces with four equivalent Tb(1)Mg4Sn5 square pyramids. Tb(1) is bonded to four equivalent Mg(1) and five equivalent Sn(1) atoms to form distorted TbMg4Sn5 square pyramids that share corners with four equivalent Mg(1)Tb4Mg4Sn4 cuboctahedra, corners with eight equivalent Tb(1)Mg4Sn5 square pyramids, edges with eight equivalent Mg(1)Tb4Mg4Sn4 cuboctahedra, edges with four equivalent Tb(1)Mg4Sn5 square pyramids, faces with four equivalent Mg(1)Tb4Mg4Sn4 cuboctahedra, and faces with five equivalent Tb(1)Mg4Sn5 square pyramids. Sn(1) is bonded in a 9-coordinate geometry to four equivalent Mg(1) and five equivalent Tb(1) atoms. is represented by the CIF file [CIF]
data_TbMgSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.538
_cell_length_b   8.538
_cell_length_c   8.538
_cell_angle_alpha   150.156
_cell_angle_beta   150.156
_cell_angle_gamma   42.712
_symmetry_Int_Tables_number   1
_cell_volume   153.733
_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
  Tb  Tb0  1  0.667  0.667  0.000  1.0
  Tb  Tb1  1  0.333  0.333  0.000  1.0
  Mg  Mg2  1  0.000  0.500  0.500  1.0
  Mg  Mg3  1  0.500  0.000  0.500  1.0
  Sn  Sn4  1  0.864  0.864  0.000  1.0
  Sn  Sn5  1  0.136  0.136  0.000  1.0
[/CIF]
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The crystal structure described by TbMgSn crystallizes in the tetragonal I4/mmm space group. Mg(1) is bonded to four equivalent Mg(1), four equivalent Tb(1), and four equivalent Sn(1) atoms to form distorted MgTb4Mg4Sn4 cuboctahedra that share corners with four equivalent Mg(1)Tb4Mg4Sn4 cuboctahedra, corners with four equivalent Tb(1)Mg4Sn5 square pyramids, edges with eight equivalent Tb(1)Mg4Sn5 square pyramids, faces with eight equivalent Mg(1)Tb4Mg4Sn4 cuboctahedra, and faces with four equivalent Tb(1)Mg4Sn5 square pyramids. Tb(1) is bonded to four equivalent Mg(1) and five equivalent Sn(1) atoms to form distorted TbMg4Sn5 square pyramids that share corners with four equivalent Mg(1)Tb4Mg4Sn4 cuboctahedra, corners with eight equivalent Tb(1)Mg4Sn5 square pyramids, edges with eight equivalent Mg(1)Tb4Mg4Sn4 cuboctahedra, edges with four equivalent Tb(1)Mg4Sn5 square pyramids, faces with four equivalent Mg(1)Tb4Mg4Sn4 cuboctahedra, and faces with five equivalent Tb(1)Mg4Sn5 square pyramids. Sn(1) is bonded in a 9-coordinate geometry to four equivalent Mg(1) and five equivalent Tb(1) atoms. is represented by the CIF file [CIF]
data_TbMgSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.538
_cell_length_b   8.538
_cell_length_c   8.538
_cell_angle_alpha   150.156
_cell_angle_beta   150.156
_cell_angle_gamma   42.712
_symmetry_Int_Tables_number   1
_cell_volume   153.733
_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
  Tb  Tb0  1  0.667  0.667  0.000  1.0
  Tb  Tb1  1  0.333  0.333  0.000  1.0
  Mg  Mg2  1  0.000  0.500  0.500  1.0
  Mg  Mg3  1  0.500  0.000  0.500  1.0
  Sn  Sn4  1  0.864  0.864  0.000  1.0
  Sn  Sn5  1  0.136  0.136  0.000  1.0
[/CIF]
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