The structure described by Sn3Tb crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded to two equivalent Sn(1), two equivalent Sn(3), two equivalent Sn(5), two equivalent Sn(6), and four equivalent Sn(4) atoms to form TbSn12 cuboctahedra that share corners with four equivalent Tb(1)Sn12 cuboctahedra, corners with two equivalent Sn(2)Tb4Sn square pyramids, and faces with four equivalent Tb(1)Sn12 cuboctahedra. In the second Tb site, Tb(2) is bonded in a 9-coordinate geometry to one Sn(5), two equivalent Sn(1), two equivalent Sn(6), and four equivalent Sn(2) atoms. There are six inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 8-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), and four equivalent Sn(6) atoms. In the second Sn site, Sn(2) is bonded to four equivalent Tb(2) and one Sn(3) atom to form distorted SnTb4Sn square pyramids that share corners with two equivalent Tb(1)Sn12 cuboctahedra, corners with four equivalent Sn(2)Tb4Sn square pyramids, and edges with four equivalent Sn(2)Tb4Sn square pyramids. In the third Sn site, Sn(3) is bonded in a 9-coordinate geometry to two equivalent Tb(1), one Sn(2), two equivalent Sn(4), and four equivalent Sn(5) atoms. In the fourth Sn site, Sn(4) is bonded in a rectangular see-saw-like geometry to four equivalent Tb(1), two equivalent Sn(3), and two equivalent Sn(5) atoms. In the fifth Sn site, Sn(5) is bonded in a 9-coordinate geometry to one Tb(2), two equivalent Tb(1), two equivalent Sn(4), and four equivalent Sn(3) atoms. In the sixth Sn site, Sn(6) is bonded in a 8-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), and four equivalent Sn(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_TbSn3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.322
_cell_length_b   11.322
_cell_length_c   4.466
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   157.401
_symmetry_Int_Tables_number   1
_cell_volume   219.992
_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  0.483  0.517  0.500  1.0
  Tb  Tb1  1  0.214  0.786  0.000  1.0
  Sn  Sn2  1  0.100  0.900  0.500  1.0
  Sn  Sn3  1  0.728  0.272  0.500  1.0
  Sn  Sn4  1  0.863  0.137  0.500  1.0
  Sn  Sn5  1  0.975  0.025  0.000  1.0
  Sn  Sn6  1  0.364  0.636  0.000  1.0
  Sn  Sn7  1  0.599  0.401  0.000  1.0
[/CIF]
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The structure described by Sn3Tb crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded to two equivalent Sn(1), two equivalent Sn(3), two equivalent Sn(5), two equivalent Sn(6), and four equivalent Sn(4) atoms to form TbSn12 cuboctahedra that share corners with four equivalent Tb(1)Sn12 cuboctahedra, corners with two equivalent Sn(2)Tb4Sn square pyramids, and faces with four equivalent Tb(1)Sn12 cuboctahedra. In the second Tb site, Tb(2) is bonded in a 9-coordinate geometry to one Sn(5), two equivalent Sn(1), two equivalent Sn(6), and four equivalent Sn(2) atoms. There are six inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 8-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), and four equivalent Sn(6) atoms. In the second Sn site, Sn(2) is bonded to four equivalent Tb(2) and one Sn(3) atom to form distorted SnTb4Sn square pyramids that share corners with two equivalent Tb(1)Sn12 cuboctahedra, corners with four equivalent Sn(2)Tb4Sn square pyramids, and edges with four equivalent Sn(2)Tb4Sn square pyramids. In the third Sn site, Sn(3) is bonded in a 9-coordinate geometry to two equivalent Tb(1), one Sn(2), two equivalent Sn(4), and four equivalent Sn(5) atoms. In the fourth Sn site, Sn(4) is bonded in a rectangular see-saw-like geometry to four equivalent Tb(1), two equivalent Sn(3), and two equivalent Sn(5) atoms. In the fifth Sn site, Sn(5) is bonded in a 9-coordinate geometry to one Tb(2), two equivalent Tb(1), two equivalent Sn(4), and four equivalent Sn(3) atoms. In the sixth Sn site, Sn(6) is bonded in a 8-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), and four equivalent Sn(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_TbSn3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.322
_cell_length_b   11.322
_cell_length_c   4.466
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   157.401
_symmetry_Int_Tables_number   1
_cell_volume   219.992
_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  0.483  0.517  0.500  1.0
  Tb  Tb1  1  0.214  0.786  0.000  1.0
  Sn  Sn2  1  0.100  0.900  0.500  1.0
  Sn  Sn3  1  0.728  0.272  0.500  1.0
  Sn  Sn4  1  0.863  0.137  0.500  1.0
  Sn  Sn5  1  0.975  0.025  0.000  1.0
  Sn  Sn6  1  0.364  0.636  0.000  1.0
  Sn  Sn7  1  0.599  0.401  0.000  1.0
[/CIF]
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