The material described by TbH3 is Sodium arsenide structured and crystallizes in the hexagonal P6_3/mmc space group. Tb(1) is bonded in a 11-coordinate geometry to three equivalent H(1) and eight equivalent H(2) atoms. There are two inequivalent H sites. In the first H site, H(1) is bonded in a trigonal planar geometry to three equivalent Tb(1) atoms. In the second H site, H(2) is bonded to four equivalent Tb(1) atoms to form a mixture of corner, edge, and face-sharing HTb4 tetrahedra. is represented by the CIF card [CIF]
data_TbH3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.681
_cell_length_b   3.681
_cell_length_c   6.637
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   77.887
_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  0.333  0.750  1.0
  Tb  Tb1  1  0.333  0.667  0.250  1.0
  H  H2  1  1.000  0.000  0.750  1.0
  H  H3  1  0.000  1.000  0.250  1.0
  H  H4  1  0.667  0.333  0.407  1.0
  H  H5  1  0.333  0.667  0.593  1.0
  H  H6  1  0.333  0.667  0.907  1.0
  H  H7  1  0.667  0.333  0.093  1.0
[/CIF]
.
The material described by TbH3 is Sodium arsenide structured and crystallizes in the hexagonal P6_3/mmc space group. Tb(1) is bonded in a 11-coordinate geometry to three equivalent H(1) and eight equivalent H(2) atoms. There are two inequivalent H sites. In the first H site, H(1) is bonded in a trigonal planar geometry to three equivalent Tb(1) atoms. In the second H site, H(2) is bonded to four equivalent Tb(1) atoms to form a mixture of corner, edge, and face-sharing HTb4 tetrahedra. is represented by the CIF card [CIF]
data_TbH3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.681
_cell_length_b   3.681
_cell_length_c   6.637
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   77.887
_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  0.333  0.750  1.0
  Tb  Tb1  1  0.333  0.667  0.250  1.0
  H  H2  1  1.000  0.000  0.750  1.0
  H  H3  1  0.000  1.000  0.250  1.0
  H  H4  1  0.667  0.333  0.407  1.0
  H  H5  1  0.333  0.667  0.593  1.0
  H  H6  1  0.333  0.667  0.907  1.0
  H  H7  1  0.667  0.333  0.093  1.0
[/CIF]
.