The compound described by TbNi4As2 crystallizes in the tetragonal P4_2/mnm space group. Tb(1) is bonded to six equivalent As(1) atoms to form a mixture of distorted corner and edge-sharing TbAs6 octahedra. The corner-sharing octahedral tilt angles are 40°. Ni(1) is bonded in a 3-coordinate geometry to three equivalent As(1) atoms. As(1) is bonded in a 9-coordinate geometry to three equivalent Tb(1) and six equivalent Ni(1) atoms. is represented by the CIF file [CIF]
data_Tb(Ni2As)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.211
_cell_length_b   7.211
_cell_length_c   3.740
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   194.489
_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  0.500  0.500  0.000  1.0
  Tb  Tb1  1  0.000  0.000  0.500  1.0
  Ni  Ni2  1  0.588  0.153  0.500  1.0
  Ni  Ni3  1  0.412  0.847  0.500  1.0
  Ni  Ni4  1  0.088  0.347  0.000  1.0
  Ni  Ni5  1  0.912  0.653  0.000  1.0
  Ni  Ni6  1  0.153  0.588  0.500  1.0
  Ni  Ni7  1  0.847  0.412  0.500  1.0
  Ni  Ni8  1  0.347  0.088  0.000  1.0
  Ni  Ni9  1  0.653  0.912  0.000  1.0
  As  As10  1  0.718  0.718  0.500  1.0
  As  As11  1  0.282  0.282  0.500  1.0
  As  As12  1  0.218  0.782  0.000  1.0
  As  As13  1  0.782  0.218  0.000  1.0
[/CIF]
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The compound described by TbNi4As2 crystallizes in the tetragonal P4_2/mnm space group. Tb(1) is bonded to six equivalent As(1) atoms to form a mixture of distorted corner and edge-sharing TbAs6 octahedra. The corner-sharing octahedral tilt angles are 40°. Ni(1) is bonded in a 3-coordinate geometry to three equivalent As(1) atoms. As(1) is bonded in a 9-coordinate geometry to three equivalent Tb(1) and six equivalent Ni(1) atoms. is represented by the CIF file [CIF]
data_Tb(Ni2As)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.211
_cell_length_b   7.211
_cell_length_c   3.740
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   194.489
_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  0.500  0.500  0.000  1.0
  Tb  Tb1  1  0.000  0.000  0.500  1.0
  Ni  Ni2  1  0.588  0.153  0.500  1.0
  Ni  Ni3  1  0.412  0.847  0.500  1.0
  Ni  Ni4  1  0.088  0.347  0.000  1.0
  Ni  Ni5  1  0.912  0.653  0.000  1.0
  Ni  Ni6  1  0.153  0.588  0.500  1.0
  Ni  Ni7  1  0.847  0.412  0.500  1.0
  Ni  Ni8  1  0.347  0.088  0.000  1.0
  Ni  Ni9  1  0.653  0.912  0.000  1.0
  As  As10  1  0.718  0.718  0.500  1.0
  As  As11  1  0.282  0.282  0.500  1.0
  As  As12  1  0.218  0.782  0.000  1.0
  As  As13  1  0.782  0.218  0.000  1.0
[/CIF]
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