The compound described by TbAgAs2 is Parent of FeAs superconductors-derived structured and crystallizes in the tetragonal P4/nmm space group. Tb(1) is bonded in a 8-coordinate geometry to four equivalent Ag(1), four equivalent As(1), and four equivalent As(2) atoms. Ag(1) is bonded to four equivalent Tb(1), four equivalent Ag(1), and four equivalent As(2) atoms to form a mixture of distorted face and corner-sharing AgTb4Ag4As4 cuboctahedra. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 8-coordinate geometry to four equivalent Tb(1) and four equivalent As(1) atoms. In the second As site, As(2) is bonded in a 8-coordinate geometry to four equivalent Tb(1) and four equivalent Ag(1) atoms. is represented by the CIF card [CIF]
data_TbAgAs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.954
_cell_length_b   3.954
_cell_length_c   10.526
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   164.599
_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  0.000  0.500  0.225  1.0
  Tb  Tb1  1  0.500  0.000  0.775  1.0
  Ag  Ag2  1  0.000  0.000  0.500  1.0
  Ag  Ag3  1  0.500  0.500  0.500  1.0
  As  As4  1  0.000  0.000  0.000  1.0
  As  As5  1  0.500  0.500  0.000  1.0
  As  As6  1  0.000  0.500  0.684  1.0
  As  As7  1  0.500  0.000  0.316  1.0
[/CIF]
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The compound described by TbAgAs2 is Parent of FeAs superconductors-derived structured and crystallizes in the tetragonal P4/nmm space group. Tb(1) is bonded in a 8-coordinate geometry to four equivalent Ag(1), four equivalent As(1), and four equivalent As(2) atoms. Ag(1) is bonded to four equivalent Tb(1), four equivalent Ag(1), and four equivalent As(2) atoms to form a mixture of distorted face and corner-sharing AgTb4Ag4As4 cuboctahedra. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 8-coordinate geometry to four equivalent Tb(1) and four equivalent As(1) atoms. In the second As site, As(2) is bonded in a 8-coordinate geometry to four equivalent Tb(1) and four equivalent Ag(1) atoms. is represented by the CIF card [CIF]
data_TbAgAs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.954
_cell_length_b   3.954
_cell_length_c   10.526
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   164.599
_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  0.000  0.500  0.225  1.0
  Tb  Tb1  1  0.500  0.000  0.775  1.0
  Ag  Ag2  1  0.000  0.000  0.500  1.0
  Ag  Ag3  1  0.500  0.500  0.500  1.0
  As  As4  1  0.000  0.000  0.000  1.0
  As  As5  1  0.500  0.500  0.000  1.0
  As  As6  1  0.000  0.500  0.684  1.0
  As  As7  1  0.500  0.000  0.316  1.0
[/CIF]
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