The crystal structure described by KCeAgTe4 crystallizes in the orthorhombic Pmn2_1 space group. K(1) is bonded in a 8-coordinate geometry to two equivalent Te(3), two equivalent Te(4), and four equivalent Te(2) atoms. Ce(1) is bonded in a 9-coordinate geometry to two equivalent Te(3), two equivalent Te(4), and five equivalent Te(1) atoms. Ag(1) is bonded to four equivalent Te(2) atoms to form a mixture of distorted corner and edge-sharing AgTe4 tetrahedra. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded to five equivalent Ce(1) atoms to form a mixture of distorted corner and edge-sharing TeCe5 trigonal bipyramids. In the second Te site, Te(2) is bonded in a 8-coordinate geometry to four equivalent K(1) and four equivalent Ag(1) atoms. In the third Te site, Te(3) is bonded in a 8-coordinate geometry to two equivalent K(1), two equivalent Ce(1), and four equivalent Te(4) atoms. In the fourth Te site, Te(4) is bonded in a 8-coordinate geometry to two equivalent K(1), two equivalent Ce(1), and four equivalent Te(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_KCeAgTe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.468
_cell_length_b   4.472
_cell_length_c   21.376
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   427.136
_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
  K  K0  1  0.523  0.500  0.649  1.0
  K  K1  1  0.023  0.000  0.351  1.0
  Ce  Ce2  1  0.506  0.500  0.098  1.0
  Ce  Ce3  1  0.006  0.000  0.902  1.0
  Ag  Ag4  1  0.525  0.000  0.500  1.0
  Ag  Ag5  1  0.025  0.500  0.500  1.0
  Te  Te6  1  0.505  0.500  0.945  1.0
  Te  Te7  1  0.525  0.500  0.416  1.0
  Te  Te8  1  0.508  0.000  0.792  1.0
  Te  Te9  1  0.005  0.000  0.055  1.0
  Te  Te10  1  0.508  0.000  0.208  1.0
  Te  Te11  1  0.025  0.000  0.584  1.0
  Te  Te12  1  0.008  0.500  0.208  1.0
  Te  Te13  1  0.008  0.500  0.792  1.0
[/CIF]
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The crystal structure described by KCeAgTe4 crystallizes in the orthorhombic Pmn2_1 space group. K(1) is bonded in a 8-coordinate geometry to two equivalent Te(3), two equivalent Te(4), and four equivalent Te(2) atoms. Ce(1) is bonded in a 9-coordinate geometry to two equivalent Te(3), two equivalent Te(4), and five equivalent Te(1) atoms. Ag(1) is bonded to four equivalent Te(2) atoms to form a mixture of distorted corner and edge-sharing AgTe4 tetrahedra. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded to five equivalent Ce(1) atoms to form a mixture of distorted corner and edge-sharing TeCe5 trigonal bipyramids. In the second Te site, Te(2) is bonded in a 8-coordinate geometry to four equivalent K(1) and four equivalent Ag(1) atoms. In the third Te site, Te(3) is bonded in a 8-coordinate geometry to two equivalent K(1), two equivalent Ce(1), and four equivalent Te(4) atoms. In the fourth Te site, Te(4) is bonded in a 8-coordinate geometry to two equivalent K(1), two equivalent Ce(1), and four equivalent Te(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_KCeAgTe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.468
_cell_length_b   4.472
_cell_length_c   21.376
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   427.136
_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
  K  K0  1  0.523  0.500  0.649  1.0
  K  K1  1  0.023  0.000  0.351  1.0
  Ce  Ce2  1  0.506  0.500  0.098  1.0
  Ce  Ce3  1  0.006  0.000  0.902  1.0
  Ag  Ag4  1  0.525  0.000  0.500  1.0
  Ag  Ag5  1  0.025  0.500  0.500  1.0
  Te  Te6  1  0.505  0.500  0.945  1.0
  Te  Te7  1  0.525  0.500  0.416  1.0
  Te  Te8  1  0.508  0.000  0.792  1.0
  Te  Te9  1  0.005  0.000  0.055  1.0
  Te  Te10  1  0.508  0.000  0.208  1.0
  Te  Te11  1  0.025  0.000  0.584  1.0
  Te  Te12  1  0.008  0.500  0.208  1.0
  Te  Te13  1  0.008  0.500  0.792  1.0
[/CIF]
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