The structure described by KCe(PO3)4 crystallizes in the monoclinic P2_1 space group. K(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(12), one O(4), one O(5), one O(6), one O(7), and one O(9) atom. Ce(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(12), one O(4), one O(5), one O(6), one O(7), and one O(9) atom. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(11), one O(3), one O(5), and one O(6) atom to form corner-sharing PO4 tetrahedra. In the second P site, P(2) is bonded to one O(1), one O(10), one O(3), and one O(8) atom to form corner-sharing PO4 tetrahedra. In the third P site, P(3) is bonded to one O(2), one O(4), one O(7), and one O(8) atom to form corner-sharing PO4 tetrahedra. In the fourth P site, P(4) is bonded to one O(11), one O(12), one O(2), and one O(9) atom to form corner-sharing PO4 tetrahedra. There are twelve inequivalent O sites. In the first O site, O(11) is bonded in a bent 150 degrees geometry to one P(1) and one P(4) atom. In the second O site, O(12) is bonded in a distorted single-bond geometry to one K(1), one Ce(1), and one P(4) atom. In the third O site, O(1) is bonded in a distorted single-bond geometry to one K(1), one Ce(1), and one P(2) atom. In the fourth O site, O(2) is bonded in a bent 150 degrees geometry to one P(3) and one P(4) atom. In the fifth O site, O(3) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the sixth O site, O(4) is bonded in a distorted single-bond geometry to one K(1), one Ce(1), and one P(3) atom. In the seventh O site, O(5) is bonded in a 1-coordinate geometry to one K(1), one Ce(1), and one P(1) atom. In the eighth O site, O(6) is bonded in a distorted single-bond geometry to one K(1), one Ce(1), and one P(1) atom. In the ninth O site, O(7) is bonded in a 1-coordinate geometry to one K(1), one Ce(1), and one P(3) atom. In the tenth O site, O(8) is bonded in a bent 120 degrees geometry to one P(2) and one P(3) atom. In the eleventh O site, O(9) is bonded in a 1-coordinate geometry to one K(1), one Ce(1), and one P(4) atom. In the twelfth O site, O(10) is bonded in a distorted single-bond geometry to one K(1), one Ce(1), and one P(2) atom. is represented by the CIF card [CIF]
data_KCe(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.263
_cell_length_b   8.495
_cell_length_c   8.028
_cell_angle_alpha   89.997
_cell_angle_beta   91.985
_cell_angle_gamma   90.001
_symmetry_Int_Tables_number   1
_cell_volume   494.966
_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  0.229  0.312  0.279  1.0
  K  K1  1  0.771  0.812  0.721  1.0
  Ce  Ce2  1  0.734  0.497  0.242  1.0
  Ce  Ce3  1  0.266  0.997  0.758  1.0
  P  P4  1  0.934  0.874  0.100  1.0
  P  P5  1  0.065  0.374  0.900  1.0
  P  P6  1  0.877  0.242  0.603  1.0
  P  P7  1  0.123  0.742  0.397  1.0
  P  P8  1  0.496  0.350  0.619  1.0
  P  P9  1  0.504  0.850  0.381  1.0
  P  P10  1  0.603  0.075  0.106  1.0
  P  P11  1  0.397  0.575  0.894  1.0
  O  O12  1  0.891  0.300  0.430  1.0
  O  O13  1  0.109  0.800  0.570  1.0
  O  O14  1  0.493  0.951  0.215  1.0
  O  O15  1  0.507  0.451  0.785  1.0
  O  O16  1  0.955  0.377  0.726  1.0
  O  O17  1  0.046  0.877  0.274  1.0
  O  O18  1  0.327  0.252  0.611  1.0
  O  O19  1  0.673  0.752  0.389  1.0
  O  O20  1  0.936  0.406  0.035  1.0
  O  O21  1  0.064  0.906  0.965  1.0
  O  O22  1  0.815  0.734  0.074  1.0
  O  O23  1  0.185  0.234  0.926  1.0
  O  O24  1  0.528  0.452  0.472  1.0
  O  O25  1  0.472  0.952  0.528  1.0
  O  O26  1  0.667  0.236  0.653  1.0
  O  O27  1  0.333  0.736  0.347  1.0
  O  O28  1  0.459  0.545  0.069  1.0
  O  O29  1  0.541  0.045  0.931  1.0
  O  O30  1  0.041  0.589  0.349  1.0
  O  O31  1  0.959  0.089  0.651  1.0
  O  O32  1  0.814  0.028  0.131  1.0
  O  O33  1  0.186  0.528  0.869  1.0
  O  O34  1  0.582  0.234  0.179  1.0
  O  O35  1  0.418  0.734  0.821  1.0
[/CIF]
.
The structure described by KCe(PO3)4 crystallizes in the monoclinic P2_1 space group. K(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(12), one O(4), one O(5), one O(6), one O(7), and one O(9) atom. Ce(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(12), one O(4), one O(5), one O(6), one O(7), and one O(9) atom. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(11), one O(3), one O(5), and one O(6) atom to form corner-sharing PO4 tetrahedra. In the second P site, P(2) is bonded to one O(1), one O(10), one O(3), and one O(8) atom to form corner-sharing PO4 tetrahedra. In the third P site, P(3) is bonded to one O(2), one O(4), one O(7), and one O(8) atom to form corner-sharing PO4 tetrahedra. In the fourth P site, P(4) is bonded to one O(11), one O(12), one O(2), and one O(9) atom to form corner-sharing PO4 tetrahedra. There are twelve inequivalent O sites. In the first O site, O(11) is bonded in a bent 150 degrees geometry to one P(1) and one P(4) atom. In the second O site, O(12) is bonded in a distorted single-bond geometry to one K(1), one Ce(1), and one P(4) atom. In the third O site, O(1) is bonded in a distorted single-bond geometry to one K(1), one Ce(1), and one P(2) atom. In the fourth O site, O(2) is bonded in a bent 150 degrees geometry to one P(3) and one P(4) atom. In the fifth O site, O(3) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the sixth O site, O(4) is bonded in a distorted single-bond geometry to one K(1), one Ce(1), and one P(3) atom. In the seventh O site, O(5) is bonded in a 1-coordinate geometry to one K(1), one Ce(1), and one P(1) atom. In the eighth O site, O(6) is bonded in a distorted single-bond geometry to one K(1), one Ce(1), and one P(1) atom. In the ninth O site, O(7) is bonded in a 1-coordinate geometry to one K(1), one Ce(1), and one P(3) atom. In the tenth O site, O(8) is bonded in a bent 120 degrees geometry to one P(2) and one P(3) atom. In the eleventh O site, O(9) is bonded in a 1-coordinate geometry to one K(1), one Ce(1), and one P(4) atom. In the twelfth O site, O(10) is bonded in a distorted single-bond geometry to one K(1), one Ce(1), and one P(2) atom. is represented by the CIF card [CIF]
data_KCe(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.263
_cell_length_b   8.495
_cell_length_c   8.028
_cell_angle_alpha   89.997
_cell_angle_beta   91.985
_cell_angle_gamma   90.001
_symmetry_Int_Tables_number   1
_cell_volume   494.966
_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  0.229  0.312  0.279  1.0
  K  K1  1  0.771  0.812  0.721  1.0
  Ce  Ce2  1  0.734  0.497  0.242  1.0
  Ce  Ce3  1  0.266  0.997  0.758  1.0
  P  P4  1  0.934  0.874  0.100  1.0
  P  P5  1  0.065  0.374  0.900  1.0
  P  P6  1  0.877  0.242  0.603  1.0
  P  P7  1  0.123  0.742  0.397  1.0
  P  P8  1  0.496  0.350  0.619  1.0
  P  P9  1  0.504  0.850  0.381  1.0
  P  P10  1  0.603  0.075  0.106  1.0
  P  P11  1  0.397  0.575  0.894  1.0
  O  O12  1  0.891  0.300  0.430  1.0
  O  O13  1  0.109  0.800  0.570  1.0
  O  O14  1  0.493  0.951  0.215  1.0
  O  O15  1  0.507  0.451  0.785  1.0
  O  O16  1  0.955  0.377  0.726  1.0
  O  O17  1  0.046  0.877  0.274  1.0
  O  O18  1  0.327  0.252  0.611  1.0
  O  O19  1  0.673  0.752  0.389  1.0
  O  O20  1  0.936  0.406  0.035  1.0
  O  O21  1  0.064  0.906  0.965  1.0
  O  O22  1  0.815  0.734  0.074  1.0
  O  O23  1  0.185  0.234  0.926  1.0
  O  O24  1  0.528  0.452  0.472  1.0
  O  O25  1  0.472  0.952  0.528  1.0
  O  O26  1  0.667  0.236  0.653  1.0
  O  O27  1  0.333  0.736  0.347  1.0
  O  O28  1  0.459  0.545  0.069  1.0
  O  O29  1  0.541  0.045  0.931  1.0
  O  O30  1  0.041  0.589  0.349  1.0
  O  O31  1  0.959  0.089  0.651  1.0
  O  O32  1  0.814  0.028  0.131  1.0
  O  O33  1  0.186  0.528  0.869  1.0
  O  O34  1  0.582  0.234  0.179  1.0
  O  O35  1  0.418  0.734  0.821  1.0
[/CIF]
.