The crystal structure described by TbAsSe crystallizes in the orthorhombic Pnma space group. Tb(1) is bonded in a 9-coordinate geometry to four equivalent As(1) and five equivalent Se(1) atoms. As(1) is bonded in a 8-coordinate geometry to four equivalent Tb(1) and four equivalent As(1) atoms. Se(1) is bonded to five equivalent Tb(1) atoms to form a mixture of distorted corner and edge-sharing SeTb5 trigonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_TbAsSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.905
_cell_length_b   3.949
_cell_length_c   17.552
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   270.707
_cell_formula_units_Z   4
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  0.750  0.732  0.640  1.0
  Tb  Tb1  1  0.250  0.268  0.360  1.0
  Tb  Tb2  1  0.750  0.768  0.140  1.0
  Tb  Tb3  1  0.250  0.232  0.860  1.0
  As  As4  1  0.250  0.708  0.998  1.0
  As  As5  1  0.750  0.292  0.002  1.0
  As  As6  1  0.250  0.792  0.498  1.0
  As  As7  1  0.750  0.208  0.502  1.0
  Se  Se8  1  0.750  0.734  0.813  1.0
  Se  Se9  1  0.250  0.266  0.187  1.0
  Se  Se10  1  0.750  0.766  0.313  1.0
  Se  Se11  1  0.250  0.234  0.687  1.0
[/CIF]
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The crystal structure described by TbAsSe crystallizes in the orthorhombic Pnma space group. Tb(1) is bonded in a 9-coordinate geometry to four equivalent As(1) and five equivalent Se(1) atoms. As(1) is bonded in a 8-coordinate geometry to four equivalent Tb(1) and four equivalent As(1) atoms. Se(1) is bonded to five equivalent Tb(1) atoms to form a mixture of distorted corner and edge-sharing SeTb5 trigonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_TbAsSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.905
_cell_length_b   3.949
_cell_length_c   17.552
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   270.707
_cell_formula_units_Z   4
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  0.750  0.732  0.640  1.0
  Tb  Tb1  1  0.250  0.268  0.360  1.0
  Tb  Tb2  1  0.750  0.768  0.140  1.0
  Tb  Tb3  1  0.250  0.232  0.860  1.0
  As  As4  1  0.250  0.708  0.998  1.0
  As  As5  1  0.750  0.292  0.002  1.0
  As  As6  1  0.250  0.792  0.498  1.0
  As  As7  1  0.750  0.208  0.502  1.0
  Se  Se8  1  0.750  0.734  0.813  1.0
  Se  Se9  1  0.250  0.266  0.187  1.0
  Se  Se10  1  0.750  0.766  0.313  1.0
  Se  Se11  1  0.250  0.234  0.687  1.0
[/CIF]
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