The structure described by K4Eu(PS4)2 crystallizes in the orthorhombic Ibam space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to one S(1), one S(3), and six equivalent S(2) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to two equivalent S(1) and four equivalent S(3) atoms. Eu(1) is bonded to four equivalent S(1) and four equivalent S(2) atoms to form distorted EuS8 hexagonal bipyramids that share edges with two equivalent Eu(1)S8 hexagonal bipyramids and edges with four equivalent P(1)S4 tetrahedra. P(1) is bonded to one S(1), one S(3), and two equivalent S(2) atoms to form PS4 tetrahedra that share edges with two equivalent Eu(1)S8 hexagonal bipyramids. There are three inequivalent S sites. In the first S site, S(3) is bonded to one K(1), four equivalent K(2), and one P(1) atom to form a mixture of distorted corner and edge-sharing SK5P octahedra. The corner-sharing octahedral tilt angles range from 4-12°. In the second S site, S(1) is bonded in a 6-coordinate geometry to one K(1), two equivalent K(2), two equivalent Eu(1), and one P(1) atom. In the third S site, S(2) is bonded in a 1-coordinate geometry to three equivalent K(1), one Eu(1), and one P(1) atom. is represented by the CIF file [CIF]
data_K4Eu(PS4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.352
_cell_length_b   11.352
_cell_length_c   11.352
_cell_angle_alpha   133.786
_cell_angle_beta   128.679
_cell_angle_gamma   71.523
_symmetry_Int_Tables_number   1
_cell_volume   807.051
_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  0.918  0.798  0.880  1.0
  K  K1  1  0.494  0.744  0.750  1.0
  K  K2  1  0.082  0.202  0.120  1.0
  K  K3  1  0.006  0.256  0.750  1.0
  K  K4  1  0.582  0.962  0.380  1.0
  K  K5  1  0.506  0.256  0.250  1.0
  K  K6  1  0.994  0.744  0.250  1.0
  K  K7  1  0.418  0.038  0.620  1.0
  Eu  Eu8  1  0.250  0.500  0.750  1.0
  Eu  Eu9  1  0.750  0.500  0.250  1.0
  P  P10  1  0.128  0.834  0.706  1.0
  P  P11  1  0.872  0.166  0.294  1.0
  P  P12  1  0.628  0.422  0.794  1.0
  P  P13  1  0.372  0.578  0.206  1.0
  S  S14  1  0.394  0.370  0.976  1.0
  S  S15  1  0.749  0.283  0.870  1.0
  S  S16  1  0.913  0.879  0.630  1.0
  S  S17  1  0.413  0.283  0.534  1.0
  S  S18  1  0.087  0.121  0.370  1.0
  S  S19  1  0.606  0.630  0.024  1.0
  S  S20  1  0.262  0.507  0.245  1.0
  S  S21  1  0.894  0.419  0.524  1.0
  S  S22  1  0.587  0.717  0.466  1.0
  S  S23  1  0.762  0.018  0.255  1.0
  S  S24  1  0.249  0.879  0.966  1.0
  S  S25  1  0.106  0.581  0.476  1.0
  S  S26  1  0.751  0.121  0.034  1.0
  S  S27  1  0.251  0.717  0.130  1.0
  S  S28  1  0.738  0.493  0.755  1.0
  S  S29  1  0.238  0.982  0.745  1.0
[/CIF]
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The structure described by K4Eu(PS4)2 crystallizes in the orthorhombic Ibam space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to one S(1), one S(3), and six equivalent S(2) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to two equivalent S(1) and four equivalent S(3) atoms. Eu(1) is bonded to four equivalent S(1) and four equivalent S(2) atoms to form distorted EuS8 hexagonal bipyramids that share edges with two equivalent Eu(1)S8 hexagonal bipyramids and edges with four equivalent P(1)S4 tetrahedra. P(1) is bonded to one S(1), one S(3), and two equivalent S(2) atoms to form PS4 tetrahedra that share edges with two equivalent Eu(1)S8 hexagonal bipyramids. There are three inequivalent S sites. In the first S site, S(3) is bonded to one K(1), four equivalent K(2), and one P(1) atom to form a mixture of distorted corner and edge-sharing SK5P octahedra. The corner-sharing octahedral tilt angles range from 4-12°. In the second S site, S(1) is bonded in a 6-coordinate geometry to one K(1), two equivalent K(2), two equivalent Eu(1), and one P(1) atom. In the third S site, S(2) is bonded in a 1-coordinate geometry to three equivalent K(1), one Eu(1), and one P(1) atom. is represented by the CIF file [CIF]
data_K4Eu(PS4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.352
_cell_length_b   11.352
_cell_length_c   11.352
_cell_angle_alpha   133.786
_cell_angle_beta   128.679
_cell_angle_gamma   71.523
_symmetry_Int_Tables_number   1
_cell_volume   807.051
_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  0.918  0.798  0.880  1.0
  K  K1  1  0.494  0.744  0.750  1.0
  K  K2  1  0.082  0.202  0.120  1.0
  K  K3  1  0.006  0.256  0.750  1.0
  K  K4  1  0.582  0.962  0.380  1.0
  K  K5  1  0.506  0.256  0.250  1.0
  K  K6  1  0.994  0.744  0.250  1.0
  K  K7  1  0.418  0.038  0.620  1.0
  Eu  Eu8  1  0.250  0.500  0.750  1.0
  Eu  Eu9  1  0.750  0.500  0.250  1.0
  P  P10  1  0.128  0.834  0.706  1.0
  P  P11  1  0.872  0.166  0.294  1.0
  P  P12  1  0.628  0.422  0.794  1.0
  P  P13  1  0.372  0.578  0.206  1.0
  S  S14  1  0.394  0.370  0.976  1.0
  S  S15  1  0.749  0.283  0.870  1.0
  S  S16  1  0.913  0.879  0.630  1.0
  S  S17  1  0.413  0.283  0.534  1.0
  S  S18  1  0.087  0.121  0.370  1.0
  S  S19  1  0.606  0.630  0.024  1.0
  S  S20  1  0.262  0.507  0.245  1.0
  S  S21  1  0.894  0.419  0.524  1.0
  S  S22  1  0.587  0.717  0.466  1.0
  S  S23  1  0.762  0.018  0.255  1.0
  S  S24  1  0.249  0.879  0.966  1.0
  S  S25  1  0.106  0.581  0.476  1.0
  S  S26  1  0.751  0.121  0.034  1.0
  S  S27  1  0.251  0.717  0.130  1.0
  S  S28  1  0.738  0.493  0.755  1.0
  S  S29  1  0.238  0.982  0.745  1.0
[/CIF]
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